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Part 50
Half-Life

Part 50

Detailed walkthrough for Half-Life's Part 50, guiding you through the coolant system, reactor core ascent, and alien battle hallway, including enemy encounters and environmental puzzles.

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Detailed walkthrough for Half-Life's Part 50, guiding you through the coolant system, reactor core ascent, and alien battle hallway, including enemy encounters and environmental puzzles.

Walkthrough
  1. 1
    Follow the "02 COOLANT SYSTEM" signs until you reach a hall blocked by rubble. Crouch-walk past the first large piece of rubble on its left, turn right, jump onto the rubble on the floor, move to its other end, turn left, and proceed to the door ahead.
  2. 2
    In the next room, equip the gluon gun. Open the door and quickly kill the alien grunt directly across the room. If crouched, the grunt won't see you.
  3. 3
    (Optional) Altfire-hornet the explosive crate on the grunt's side of the room, then fire hornets at him over the large white hanging object. If hornets go up, sneak forward to altfire-hornet the barnacle over the upper walkway.
  4. 4
    Switch to the hornet gun and sneakily hornet the grunt on the right side of the room. Back up slightly after opening the door to help prevent him from seeing you.
  5. 5
    After the first two grunts are dead, enter the room and use altfire hornets to kill the three barnacles, one of which is over the upper walkway.
  6. 6
    Check near a dead scientist for health packs.
  7. 7
    Set a tripmine to catch the third grunt when it teleports in. Find the "COOLANT TANK 02" sign. After quicksaving, place your tripmine in the center of the second wall segment to the right of the sign.
  8. 8
    Climb the ladder and move cautiously along the walkway. The grunt will teleport in and fall through the walkway ahead. If the tripmine is placed correctly, it will kill the grunt. If not, quickrestore and try again.
  9. 9
    Jump over the walkway break and proceed to the door.
  10. 10
    Just past the door, use the wheel on the right wall to turn off the steam. Crouch-walk through the rubble and go up the stairs.
  11. 11
    At the top of the stairs, turn left and quickly hornet-shoot the two headcrabs on the walkway ahead. Use your flashlight to find the third headcrab on the floor near the big orange pump machine, then hornetize it and the three barnacles on the ceiling before dropping down.
  12. 12
    Get armor batteries near the dead scientist if needed. Use the pump machine's red lever to start it.
  13. 13
    Use the ladder to return to the walkway, then backtrack to the downstairs room with the scientist and supplies.
  14. 14
    Go the other way from the hall T-intersection and approach the door you previously bypassed.
  15. 15
    Quicksave, open the door, and run through. In the middle of the room, there's a large tank with water. Run and drop into the water quickly to avoid being horneted by alien grunts.
  16. 16
    Find the maintenance access tunnel and swim down it. When you enter a small room where you can surface for air, section c3a2b will load.
  17. 17
    Section c3a2b: ASCENDING THE CORE
  18. 18
    Swim through the tunnel to the base of the reactor core. Look up and left to see a vortigaunt near a ladder on the lowest ledge.
  19. 19
    Locate two small flow control valve wheels underwater on the walls. Use one, wait for the water level to stop rising, then use the other.
  20. 20
    Once the water stops rising again, float on the surface where the vortigaunt can't zap you and wait for it to be zapped by a core electrical discharge.
  21. 21
    Climb the ladder to near its top. Look up and locate the stray electrical bolt moving slowly above you.
  22. 22
    Right after the bolt passes, climb onto the ledge, turn left, and run for the next ladder. Quicksave near its top.
  23. 23
    On the second circular ledge, turn right and run for the nearest ladder, watching out for multiple moving electric bolts. If zapped, quickrestore and try again. Quicksave once unharmed.
  24. 24
    On the third and final circular ledge, turn right past the ladder, jump a gap in the walkway, and run for the alcove with the door.
  25. 25
    Wait in the alcove until just after the electrical beam hitting the center of the door goes off, then go through the door and run right.
  26. 26
    Proceed down the corridor until section c3a2c loads.
  27. 27
    Section c3a2c: ALIEN BATTLE HALLWAY
  28. 28
    Go through the "SUPPLY D-301" door and check the shelf for items. Enter the malfunctioning elevator and climb the ladder in the back to elevate yourself.
  29. 29
    At the top of the ladder, turn around and jump to the broken elevator door to reach level B. Go through the "SUPPLY B-301" door and check its shelf.
  30. 30
    Leave the supply room and go down the corridor to a door on the right leading to a room with a security guard.
  31. 31
    Go past that door and turn right. Walk up to the crate ahead, then immediately back up to the security room door.
  32. 32
    Have the shotgun ready to double-barrel the vortigaunt that teleports in to the left.
Tips
  • The gluon gun is effective for quickly dispatching the first grunt.
  • Using altfire hornets can be useful for dealing with enemies from a distance or through obstacles.
  • Precise tripmine placement is crucial for the grunt encounter on the walkway.
  • Be patient and observant when navigating the reactor core to avoid electrical hazards.
  • The malfunctioning elevator requires climbing a ladder and jumping to reach the next level.
  • When dealing with the vortigaunt after the supply room, position yourself near the security room door for cover and a good firing angle.

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