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Part 18
Half-Life

Part 18

Navigate Part 18 of Half-Life, including sections c1a4i, c1a4g, and c1a4j. Learn how to avoid rocket damage and find the .357 Magnum.

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Navigate Part 18 of Half-Life, including sections c1a4i, c1a4g, and c1a4j. Learn how to avoid rocket damage and find the .357 Magnum.

Walkthrough
  1. 1
    In section c1a4i, after the initial event, hit the red "TEST FIRE" button and immediately hide in a corner near a door to avoid rocket damage.
  2. 2
    Return to the rocket firing chamber, pick up the pistol dropped by the guard, and use ladders to descend to the bottom floor.
  3. 3
    Locate the ladder in the center pit and climb down to its lowest point.
  4. 4
    Quicksave, then crouch-walk carefully along the sloped ground, dropping gently when necessary until you reach section c1a4g.
  5. 5
    After a minor drop, prepare for a major drop into a pool of water; aim for the center to avoid instant death.
  6. 6
    Exit the water and approach the green toxic spill area to find a .357 Magnum and its ammo, and look for another ammo box on the opposite side of the pool.
  7. 7
    Position yourself to look down into the pool and spot two round holes below; the dead tentacle remains are in the left hole.
  8. 8
    Dive into the water and enter the right hole, then move forward and up to emerge on a platform with a ladder.
  9. 9
    If needed, climb down the ladder to use the first aid and HEV (Hazardous Environment suit) stations before climbing back up.
  10. 10
    Get onto the large brown pipe to the left of the platform and follow it until you can drop to lower pipes.
  11. 11
    Move along these pipes until you can no longer proceed, then turn right and drop to an even lower pipe.
  12. 12
    Run along this pipe until you can jump to a larger pipe with a gap, a valve wheel, and an open hatch.
  13. 13
    Use the valve wheel to close the pipe gap by leaning on the "Use item" key until it stops moving.
  14. 14
    Crouch-drop onto the ladder near the open hatch and climb down carefully to avoid losing health.
  15. 15
    After jumping over the large hole in the extended pipe segment, crouch-walk through a small fencing hole.
  16. 16
    Continue down the pipe until section c1a4j loads.
  17. 17
    After turning one last corner in the pipe, you will reach a large discolored pipe segment ending in an unbroken fence.
  18. 18
    When you walk onto the discolored segment, it will break, dropping you into the room below. To minimize health damage, lean on the "Move backward" key as you slide down the pipe; this may require multiple attempts.
  19. 19
    If you do not land on the table with the headcrab underneath, quickly jump onto the table to crush the crab, which also provides .357 ammo and health if you were injured.
  20. 20
    Bash all crates in the room to find more health packs and five unset tripmines (explosive devices you can place).
  21. 21
    Move down the corridor past the room to reach the start of the "Power Up" chapter.
Tips
  • In section c1a4i, hiding in a corner next to one of the two doors after hitting the "TEST FIRE" button is crucial to avoid rocket damage.
  • Landing on the edge of the floor next to the water in section c1a4g results in instant death; aim for the middle of the water.
  • If you need health or armor before proceeding from the platform in section c1a4g, use the HEV (Hazardous Environment suit) stations found down the ladder.
  • To avoid health loss when descending the ladder from the large pipe in section c1a4g, carefully crouch-drop onto it.
  • When sliding down the weak pipe in section c1a4j, using the "Move backward" key can help reduce damage, but may require several tries.
  • If you miss landing on the table in section c1a4j, quickly jump onto it to crush the headcrab and get supplies.
  • The five tripmines found in section c1a4j can be useful in the next chapter.

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