Half-Life (PC)/Walkthrough
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Black Mesa Inbound
You start out on a tram, not knowing anything about your surroundings. Throughout the tram ride, you'll be given bits and pieces regarding the storyline, but besides that, you really can't do anything else except sit back and look out the window. Once the tram reaches its destination, the Sector C Test Labs and Control Facilities, wait for the security guard to open the tram door for you. Follow him to the large door up ahead, wait for him to open it, and then proceed forward.
Anomalous Materials
Step through the next door and into the lobby. You can talk to the scientists and the security guard, but they'll say they're too busy, so proceed to the corridor on the right. Notice the different color panels on the wall. Follow the green one until you reach the locker room. In the back left corner is the room that houses your hazard suit, so press the switch to open the capsule and then pick it up. You can also find a battery in the locker labeled "Freeman."
Once you have your suit, exit the personnel facilities area and follow the blue panel until you reach a security guard. Proceed into the next area and press the switch to open the door. You can either take the elevator down or climb the ladder that's to your left. Go down the next two hallways and eventually you'll get to a room labeled "Test Chamber." The scientists in here will talk about the experiment, and one of them will then unlock the door ahead. Use the elevator in the next room and follow the red panel to your next destination.
Inside, two scientists will brief you on the experiment. After they unlock the door, step inside and climb up the ladder on the right. Wait for the scientists to unlock the case for you, and then press the switch. Once you do this, the experiment can finally start. From here, you just have to wait until the specimen arrives. When it does, push it into the electrical field.
Unforeseen Consequences
Exit the room the same way you came in. Press the switch near the small door to open it, and grab the medkit outside if you need it. Keep going until you reach the elevator. After talking to the scientists in the corner, one of them will follow you to open the door up ahead. In the next room, wait for the electricity to destroy the door, and wait for it to stop to safely make it across. Keep going until you reach the room with the escaped lazer. Crouch underneath it and pick up the crowbar on the other side, and then smash out one of the bottom glass panes on the door ahead and crawl underneath.
Smash another glass pane on the next door and head through, watching an elevator full of scientists fall to the bottom. You can pick up a battery from the wreckage by heading down the ladder on the right. Once you grab it, climb up the next ladder and help the security guard kill the two zombies in the room. Have him follow you into the next room, where he easily dispatches two more zombies. You can go back to the locker room to pick up two pistol clips and a battery from your locker.
After you grab the goodies, go back to the lobby room. Destroy the control panel next to the door with your crow bar and crouch underneath the door. Take the pistol clip from the dead security guard and proceed back to the lobby. Crawl under the open vent and into the next room. Crouch jump onto the fallen machine in front of the door and then crawl through the vent at the top. Take a right and pick up the pistol from the dead security guard and proceed through the double doors.
Press the switch and make your way through the sliding door. Two Houndeyes will appear as soon as you enter the room, so take care of them fast. Head into the next room and kill two more Houndeyes. Open the door on the right to find a lone Headcrab. Kill it and keep going down the hallway until you reach a ladder. Climb up to the top and immediately shoot the explosive barrels to make quick work of the enemies. Take a right to find a hiding scientist. Have him follow you across the walkway and into the next room, where a lone zombie awaits. Kill the zombie and have the scientist unlock the door, granting you access to a health station, pistol clips, and some grenades.
After getting the items, jump down from the walkway and into the next corridor. Proceed to the right and a Vortigaunt will emerge from the door in the center. Either throw a grenade into the room or take him out with your pistol. There's also a lone Headcrab behind the barrels in the corner that, so kill it. Throw a grenade into the opening to blow up a Headcrab, and if you'd like, you can also take out the zombie that's on the other side of the gate. After you take care of these guys, drop down into the opening and keep going until you reach a valve. Turn it to raise the water level, and then quickly swim to the right and exit through one of the openings above.
Go down the hallway and into a room that has a large freight elevator. Head up one of the ramps, collect the pistol clips, and pull the lever down. Immediately get on the elevator, and be sure to kill any Headcrabs that may jump down. At the bottom, take a left and keep going until you reach a platform. A sudden arrival of a Bullsquid, however, destroys the platform, so you'll have to jump onto the white pipes on the right and crawl through the vent opening in the corner.
Smash the second cover you come across, and then destroy the boxes around the corner to find some batteries. Down below you'll notice a Bullsquid taking on a group of Headcrabs, so leave it be. Once it kills all or at least most of the Headcrabs, finish it off with your grenades or pistol. Jump down into the water, but be mindful of the Barnacles (if they grab you, immediately start shooting them). Proceed through one of the canal openings on the left and climb up the ladder at the end. Open the door, finish off and Headcrabs, and head through the next door.
Keep going until you reach a large room with several hanging boxes. Climb up the ladder, and jump on top of the box that's closest to the platform. Keep jumping across the boxes until you reach the other side, and proceed down the next hallway and up a ladder. Head down the hallway and into the elevator, which will bring you to the next level.
Office Complex
Grab the battery and medkit on the floor and smash the vent cover in front of you. Take a right, destroy the next cover, and drop into the room. Immediately kill the Barnacle that grabs the scientist and then open the door near the bookshelf. Flip the switch and go back to the hallway. Smash the window next to the door up ahead and jump crouch through it. Destroy all of the crates in the next hallway (and the Headcrab at the end of it) and take the shotgun from the crate. Quickly kill the zombie that comes from behind the security guard so he can open the door. Have him follow you and be sure to grab all of the goodies from the room.
Proceed back to the hallway and have the security guard wait near the double doors. Jump crouch through the destroyed window and into the flooded room. Kill the nearby headcrab and jump a long the counters until you reach the light switch on the other side. Turn the lights off, destroy the nearby vent cover, and kill any Headcrabs inside the vent (have your flash light on). Make sure you stay crouched as you make your way across the vent. Smash the cover at the end, and proceed until you fall into the room below. Open the double doors and have the guard follow you again.
Make your way to the two crates at the other end of the room, killing the two Headcrabs in the process. Have the guard wait again, and then push the crates so they're below the exposed ladder up above. Climb on top of the crates and jump onto the ladder and into the next area. Take care of the Headcrab in the vent and then smash the nearby cover. Wait for the scientist and Headcrab to be killed by the turret, and once it deactivates, immediately drop down and stay crouched behind one of the boxes. Keep pushing it towards the turret until you reach the switch that controls. Flip it and head into the room that's on the other side.
Collect all of the ammo in the room and open the door at the end of the room, which leads back to the room with the security guard. Have him follow you and proceed back to the room with turret. Throw a grenade into the next corridor to make quick work of the Headcrabs, and head up the staircase. At the top you'll be greeted by another security guard. Have both guards follow you into the next hallway, killing any Headcrabs in the process. You can go through the door on the left to find a medkit and battery.
There will be three Vortigaunts waiting for you at the intersection, with two on the left, and one on the right. Try throwing grenades into these corridors to lure them out, and then finish them off. Approach the room with the fallen scientist and quickly kill the Headcrab that comes to greet you. Dispose of the two Vortigaunts in the next room, and head into the doorway on the left. There's a Vortigaunt immediately to your left, so make sure you kill it fast. In the next room you'll find a scientist and a medkit, but the scientist doesn't really serve a purpose.
Head back to the room with the fallen scientist and shoot out the ceiling tiles above the sign labeled "Maitenance Access." Climb up the ladder and flip the switch to disable the turret, and collect the shotgun ammo. Head back down and go into the room with the soda machines on the right and kill the three Vortigaunts. Go up the stairs, take care of the three Headcrabs, as well as the zombie and Vortigaunts in the next hallway. In the next room lies a security guard, so have him follow you if you want. You can head down the ramp to collect some shotgun shells and grenades, but you'll have to kill a Bullsquid first. Two Vortigaunts will also appear as you try to make your way back.
There's also a vent shaft next to the red door that leads to a room with several goodies. It takes a little while to get there, but it might be worth the trouble if you're running low on ammo or health. Have the security guard follow you into the cafeteria, where a zombie and several Headcrabs reside. After you kill them all, destroy the wooden barricade blocking the doorway and keep following the hallway until you reach the freezer. Before entering, dispose of the two zombies, and then pull the lever next to the door. Once inside, head through the next two doorways to see a scientist being chased by a Bullsquid. Kill the Bullsquid and collect the grenades and ammo near the bodies.
Go down the center hallway to face yet another Bullsquid. Flip the nearby switch and head back to the entrance. Climb up the ladder, smash the vent cover, and proceed through the vent until you're in front of the lift that was activated. Wait for it to come near you and hop on, smashing the crates onboard to find some batteries. Go across the lift and into the next opening, and follow the vent shaft until you reach a room with some Barnacles. Collect the items in here, but be careful of the Barnacles, and then go through the vent opening that's at the top of two air ducts.
Keep going and you'll eventually make it to a hallway with a security guard and his fallen comrade. Have him follow you to the top of the stairs and into the next room. Dispose of the two zombies that make their way into the room, and grab any items from the storage closet or nearby office. Once you do, make a running jump towards the ladder that's in the open elevator shaft (saving is recommended just in case you mess up). Climb up the ladders until you reach the top, and then jump onto the ladder that's on the dismantled elevator. Smash the vent cover at the top, drop into the elevator, and head through the elevator doors to start the next level.
"We've Got Hostiles!"
Advance down the hallway, and use the charging station and health station if you want to. You'll notice some red lazers around the corner: these trigger nearby ground turrets to fire at you, so avoid them when you can. There's no way to get past this group, so quickly run past, grab the SMG from the corpse, and run to the fire escape door. Smash the glass protecting the switch to close the door and seal off the advancing Headcrabs. Keep going and you'll notice blue lazers: these are mines, and running into one will instantly kill you, so always avoid them or shoot the base when you can (but make sure you're far away).
In the next area you'll be greeted by some Vortigaunts. Take them out with your newly acquired SMG and head down the ramp. Jump over the trigger lazer and quickly turn around to kill the summoned Vortigaunt. Destroy the two nearby ground turrets in the room with a double barrel shotgun blast, but be careful not to run into one, or else you'll activate it. Climb up the stack of green boxes on the other side of the room and take out the two ground turrets from the top. After you do, jump down and quickly go through the fire escape door, smashing the protective glass in the process.
Climb the next stack of boxes and take out your shotgun. Move carefully across the water so you don't fall over the edge of the elevator shaft, and quickly take out the two ground turrets. Shoot the lazer mine in the other room, grab any items in the room, and head up the ladder. Destroy the boxes a long the way to find some batteries. Keep going until you reach a room with a staircase, where you'll notice a new enemy, the soldier. Take him out from the top of the stairs with the SMG, and then grab the SMG ammo from atop the boxes. Proceed into the elevator.
At the top, you'll encounter three soldiers. You can throw some grenades from the elevator area to lure them out and hopefully do some damage. Avoid any grenades they throw, and use the shotgun if they come too close. Once you kill the soldiers, proceed up the stairs and across the walkway. Take a right and climb on top of the boxes until you reach the conveyor belt above. Keep going down the conveyor belt and kill the solder behind the barricade. Destroy the ground turrets in the pit below and go through the fire escape door. You'll notice several soldiers in the next room, so take out as many as you can with the SMG from the ground floor. Once you kill all of them, proceed all the way to the top and across the next walkway.
Three soldiers are stationed below, so start throwing grenades down. Finish them off with the SMG, destroy the crates for some medkits and batteries, and step into the elevator. When you reach the top, immediately run out into the open area and towards the door in the center. Climb down the ladder, grab the goodies in the crates, and open the air shaft door. Wait for the plane to destroy the upper platforms, and keep jumping down onto the bottom platforms until you reach the large vent shaft. From here, you can either crawl through the vent shaft that's on the left to collect several items, or just go through the one that's on the bottom to reach your destination.
If you through the one on the left, you may encounter some Vortigaunts and soldiers, so be careful. From the bottom vent shaft, climb up the ladder, and through the open shaft. Press the switch inside the security room to open the blast pit doors, and then step through them to reach the next level.
Blast Pit
Destroy the barricade and kill any Headcrabs you see in the next room. Kill the Bullsquid that's on the tracks and then proceed up the ramp. Take care of the zombie that comes through the door, where you can find a couple of items. Press the switch to call the elevator and take it down. At the bottom, go on the cart. Ride it full speed forward, and once it hits the barrier at the end, quickly jump on top of the one the crates to protect yourself from the acid. Take care of the Bullsquid and keep jumping on top of the crates until you reach the platform the Bullsquid was on. Climb up the ladder and into the pipe. Proceed forward until you reach an opening above. Crouch jump onto the pipe, kill the Bullsquid below, and then jump onto the pipe in front of you.
Keep going and take care of the Bullsquid in the acid pool. Jump onto the walkway and grab the items on the nearby table. In the next room, walk across the pipes until you reach the elevator (just avoid the Bullsquids) and press the switch. Proceed forward and quickly kill the Bullsquid around the corner. Farther down the walkway, you'll encounter some Houndeyes and Headcrabs, so dispose of them. You can shoot the explosive barrels that are on the farther walkways to quickly kill some enemies; you'll also notice an annoying Bullsquid that's on the other side of the room, so dispose of him from a safe distance with the pistol. Head across the walkway and pull the lever to reach the next area.
Proceed down the hallway and into the next room, where a scientist is made quick work of by the Tentacle. Head into the next room, avoiding the barnacles, and climb up the ladder. Grab the grenades and watch the foolish security guard try to take on the Tentacle. Note that the Tentacle cannot see you, it can only hear you. When trying to get by it, always crouch, and throw grenades as a distraction. You can also shoot the Tentacle to stun it for about five seconds, which is useful for when you want to enter a doorway. Knowing all of these facts, carefully make your way to the bottom floor, quickly destroying the wooden boards blocking the doorway.
Go into the next hallway and across the walkway. Kill the Houndeyes around the corner, as well as the Bullsquid in the next room. Press the switch on the catwalk to call the elevator. When the elevator starts to go down, it suddenly stops. It's about to fall and bring you with it, so quickly jump to the ladder that's on your left and climb all the way down. If you're good, you can also jump onto the platform below right before the elevator falls into the acid pool. Go around the corner and jump over the toxic waste. Take care of the zombie and use the small elevator to reach the ladder on the other side. Go up the ladder and carefully make your way to one of the ladders, as you'll now have to avoid the moving elevators. At the top, press the switch to activate one part of the generator. Crouch jump onto the generator and go to the other side to press the next switch. Once both are pressed, head back to the hallway with the toxic waste.
Climb up the huge ladder on the right to make your way back to the top floor. Now that the power's back on, the room that's flooded with water will be a little harder to get across. Use the nearby small crates to make yourself a bridge and safely make it to the other side. From there, head back to the silo with the Tentacle. We want to get to the floor that's above, so carefully make your way to the next floor. Quickly smash the doorway with your crowbar and head down the next two hallways. The Tentacle will cause some debris to fall, which destroys two of the walkways, so you'll have to make careful jumps across.
Once you reach the end, kill the zombie and enter the next room. Go across the walkway and climb down the ladder. Kill the two zombies and smash the sewer grate. Climb all the way down and make your way across the pipes to reach another ladder. Go up and kill the zombie that's waiting at the top. Use the keypad next to the door, take care of the two zombies, and climb down the next two ladders. Press the switch in front of the huge fan and immediately climb back up the ladder (don't get hit by the fan though). Jump towards the fan to have it lift you all the way to the top. Start smashing the boards that are blocking your path, and then smash the vent cover.
Proceed through the vent shaft, killing any Headcrabs you come across. When you reach the end, destroy the cover and drop down into the room. Kill the zombies and Headcrabs that populate the room and press the "Oxygen" and "Fuel" switches nearby. Use the keypad near the door to exit the area. From here, head back to the silo with the Tentacle. Now that we have everything for our engine test, we can kill the Tentacle for good. Make your way back to the top floor with the security guard and climb down the ladder. Head into the room where the scientist was killed and press the "Test" switch. Sit back and watch the Tentacle turn into dust.
Now go back to the silo and jump into the hole the Tentacle was in. Slowly make your way down and jump into the pool of water. Surface, climb out, and take the magnum and its respective ammo from the corpses. Head back into the water and swim a long the edge until you can surface into the next area. You can climb down the ladder in here to reach a charging and health station, but other than that, just jump onto the pipe in front of the walkway. Keep moving a long the pipe, jumping down onto the next one when you reach a dead end. Keep following the pipe until you reach an open area. From here, jump onto the next pipe and into the small opening. Keep turning the valve and then jump over the fence and into the next pipe. When you reach the end, the pipe will suddenly collapse and bring you into the next level.
Power Up
Destroy the crates in this room to find some lazer mines and medkits, then proceed down the hallway. Quickly run to the doorway on the other side of the room, and avoid the soldiers and that huge blue monster (called the Gargantua) at all costs, because we'll deal with him later. Head up the stairs, killing the Vortigaunt a long the way. The Gargantua will cause the walkway to collapse, but you can still use the ladder on the bottom floor to reach the double doors. Take care of the Headcrabs before climbing up the ladder though. At the top, smash the wooden barricade blocking the door and head on through, where you'll notice a security guard badly hurt. Take the ammo and use the charging station, and then climb back down the ladder.
Head all the way down the hallway, killing any Vortigaunts or Headcrabs you encounter. At the end, you'll notice a valve next to a door. Keep turning it to open the door and then step through. Climb up the ladder, take care of the soldier on the top floor, and collect the grenade launcher shells and ammo from the corpse. Proceed to the top floor, destroy the ground turret around the corner, and smash the crates for some ammo. Run down the hallway, but be careful once you make it to the open area, as a soldier lies in wait behind a barricade. Kill him and head up the ramp. When you reach the top, a soldier will come in behind you, so quickly kill him.
Through the doorway lies many soldiers, so be prepared to fight them. There should be about four soldiers total. You can head down the right-hand passage to find lots of ammo and explosives. The left-hand passage contains a charging station and some medkits. When you're done collecting items, throw a grenade down the elevator shaft to destroy all of the lazer mines. When all of them are destroyed, call the elevator and take it down to the next floor. Follow the walkway and kill any Houndeyes you come across, and go all the way down the staircase until you come to flooded room.
Take out the zombie around the corner and walk up to the generator. You'll notice a small wooden crate blocking its way, so destroy it to continue the flow of power. Once you do this, climb back up the stairs, but stop on the next floor. Kill the headcrab and carefully make your way across the room. Press the switch to restore the power, and head back to the elevator. Take care of the two soldiers that come down and bring it up to the next level. Kill the two soldiers in the room and head back out to the open area. Finish off the last soldier and head all the way back to the room with the Gargantua.
Before actually stepping into the room with the Gargantua, it is recommended that you save your game. After you do, run out into the room, and immediately take a left. Run through the now unlocked gate and keep going until you reach a large generator room. Go up the staircase in the corner and quickly flip the switch. Now go through the door behind you and watch as the Gargantua explodes. The area's now safe, so go back to the room with the tracks and hop on the small cart. Ride it forward until it stops and go back to the room with the fallen security guard. Pull the lever, jump out of the window, and go back on the cart. Now keep riding it forward, breaking through the barricade, until you reach the next level.
