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Part 51
Half-Life

Part 51

Complete Half-Life Part 51 walkthrough covering steam vents, headcrabs, teleporters, and secret areas.

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Complete Half-Life Part 51 walkthrough covering steam vents, headcrabs, teleporters, and secret areas.

Walkthrough
  1. 1
    Past the hallway, sneak-shoot or engage enemies. If spotted, retreat to the fallen door in the elevator shaft to gain an advantage.
  2. 2
    Locate the large red wheel on the wall and use it to activate steam vents down the hall.
  3. 3
    Approach the steam but do not enter. As aliens teleport in, retreat to a nearby room and exit through the back right door.
  4. 4
    After a short wait, return to the hall doorway and fire hornets toward the steam to damage or kill enemies.
  5. 5
    Strafe into the hall briefly to lure surviving aliens into the steam, then retreat to cover (press the cover button to crouch behind walls or objects) as they die.
  6. 6
    If only vortigaunts appear, toss a hand grenade past the steam toward the back wall to trigger a grunt's appearance. If not, it may not appear.
  7. 7
    Shut off the steam by using the same wheel again.
  8. 8
    Turn the corner past the steam vents to find two more grunts. Quicksave and attempt to sneak-shoot them with hornets.
  9. 9
    If they attack aggressively, quickrestore and consider getting help from a security guard or using heavier weapons like the crossbow.
  10. 10
    At the end of their hallway, find a ladder leading down to a small optional area in section c3a2f. Crouch-hop onto the railing and run onto the ladder to avoid a fall.

Section c3a2f: SIDE AREA WITH SUPPLIES

  1. In the room at the bottom of the ladder, find the numbers 2, 4, and 7 written in blood on the floor near a reactor core diagram.
  2. Use stacked crates to hop over a fence and land on a middle walkway in the next room.
  3. Crouch-walk under a fallen beam to reach a health pack and gauss gun ammo.
  4. Crouch-walk back under the beam and use the ladder on the left side of the fence to get back over it.
  5. Return up the tall ladder to section c3a2c.

Section c3a2c (again): ASCENDING THE CORE, PART 2

  1. Go through the "CORE LEVEL B" door down a side hall.
  2. Walk next to the teleporter orb closest to the core fence.
  3. Watch for a rotating platform to move under the nearest orb past the fence.
  4. Enter the portal next to you to reach the moving platform.
  5. You will rotate around ports 1 through 3. Jump into port 1 to be teleported to a headcrab-infested area.
  6. In the grate-floored room, kill the headcrab ahead. Another will drop near the ladder; kill it and any subsequent drops.
  7. Use your flashlight to find and kill headcrabs in the two dark side niches along the right wall (three headcrabs per niche, dropping one at a time).
  8. Go to the edge of the grate-floored room and kill the headcrab near the wall to the left with hornets. Wait for more to fall, or check the ceiling if none appear.
  9. Kill the headcrab visible to the left of the portal on the platform at the other end of the room.
  10. Use altfire hornets to break floor gratings or walk along the floor beam across the room to a spot near the ladder on the other side.
  11. Jump to the ladder and climb it to the portal platform.
  12. Collect hand grenades from a crate near the portal and go through it to return to the starting teleporter area.
  13. After returning to a rotating platform, go through port 3 to reach a secret supply room.
  14. Use the exit portal to return to the starting teleporter area.
  15. Go through port 2, but jump to the port 2 ledge when the rotating platform is approaching it, not directly in front of it.
  16. Quicksave, turn, and look up. Wait for a rotating platform to move under the portal almost directly above you.
  17. Back up into port 2 and immediately start crouching as the platform moves under a pipe between ports 6 and 4.
  18. Wait until you can jump into port 5, which leads to a room with supplies and three scientists.
  19. Go through the room's door and down a hallway to another room with supplies and a portal back to the starting teleporter area.
  20. Go through port 2 again to reach the next level.
  21. Jump to port 4's ledge and quicksave.
  22. Look up and right to see the portal for port 4. Back into it when a moving platform is in position.
  23. Crouch when the platform moves under a pipe. Jump into port 8.
Tips
  • If enemies spot you before you can sneak-shoot them, use the fallen door in the elevator shaft as cover.
  • The steam vents can be used as an environmental hazard to kill teleporting aliens.
  • If you don't trigger the grunt with a grenade, it may never appear.
  • Quicksave before attempting to sneak-shoot the two grunts around the corner.
  • If direct combat is difficult, consider using a security guard for assistance or heavier weapons.
  • To avoid falling when reaching the ladder to section c3a2f, crouch-hop onto the railing first.
  • Use the flashlight to spot headcrabs in dark areas.
  • When navigating the teleporter orbs, pay attention to the rotating platforms' movements.
  • Jumping to the port 2 ledge requires precise timing as the rotating platform approaches.
  • Crouching is essential when the rotating platform moves under pipes to avoid damage.

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