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Part 42
Half-Life: Opposing Force

Part 42

Navigate Part 42 of Half-Life: Opposing Force, using the hornet gun and snarks to defeat marines and aliens.

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Navigate Part 42 of Half-Life: Opposing Force, using the hornet gun and snarks to defeat marines and aliens.

Walkthrough
  1. 1
    After defeating the initial enemies, find health and bullets near the mounted gun.
  2. 2
    Use the alien whoosh-thing (a device that propels you upwards) to reach the higher floor by running at it and jumping as you land on it.
  3. 3
    Turn right and crouch-walk forward until you hear fighting below.
  4. 4
    Wait for the fighting to stop, then use the hornet gun to sneak-shoot survivors or the assault rifle to finish them.
  5. 5
    Drop back down to the lower floor with the whoosh-thing. This is your last chance to access the two guard-opened supply rooms.
  6. 6
    Return to the whoosh-thing, use it to get back to the upper floor, and look into the lower area.
  7. 7
    If the vent shaft entrance near the back right corner is covered by a grating, shoot it with altfire hornets until it breaks.
  8. 8
    If snarks emerge from the shaft, wait for them to time out and explode before proceeding.
  9. 9
    Crouch down at the vent shaft entrance and use your flashlight to see the back wall.
  10. 10
    Shoot the back wall with altfire hornets until it breaks, releasing more snarks.
  11. 11
    Quickly run and hide behind the health pack crates until you no longer hear snark noises or explosions.
  12. 12
    Return to the vent shaft and move until you reach the broken-open area. Enter it to pick up snarks.
  13. 13
    Continue down the shaft past that point until you reach a grating blocking your path.
  14. 14
    Bash the grating with the crowbar.
  15. 15
    Turn and go back around the corner while marines shoot out a large part of the shaft.
  16. 16
    Get out your snarks, quicksave, turn the corner, and toss several snarks through the shaft opening to attack the marines below.
  17. 17
    If snarks are not thrown correctly, quickrestore and try again.
  18. 18
    Once all marines below are dead, return to the snark stash to resupply.
  19. 19
    To drop into the garage area without taking damage, carefully crouch-drop onto the back fender of the raised car, then to the floor. Alternatively, drop and use the first aid station to heal.
  20. 20
    Take the three armor batteries if needed.
  21. 21
    Go to the garage's small door, push it open, and quickly retreat to the other side of the garage as marines blow up the doorway and cover (press the cover button to crouch behind walls or objects) it with rubble.
  22. 22
    After explosions create a hole in the wall to the left of the door, quicksave.
  23. 23
    Get out your snarks and start jump-tossing them through the hole.
  24. 24
    Alternatively, jump-shoot hornets through the hole or fire hornets through debris holes past the small door.
  25. 25
    If snarks or hornets are ineffective, try shooting a marine through the debris holes with the pistol.
  26. 26
    Use the method described below to elevate yourself, then hit any survivors with RPG rockets.
  27. 27
    Once both marines are dead, use the two hanging control switches in the middle of the garage to find the one that operates the empty lift.
  28. 28
    Hit the control again and run onto the lift before it rises.
  29. 29
    To get through the wall hole, run to it from the raised lift without jumping.
  30. 30
    In the outdoor area, use the huge gun emplacement to blast the nearby metal door.
  31. 31
    Keep shooting the doorway until alien grunts stop appearing.
  32. 32
    Go through the doorway and down to look into a room where marines are fighting aliens.
  33. 33
    Use the hornet gun's altfire mode to kill the vort across the room on the same walkway, then retreat out of sight.
  34. 34
    When fighting stops, quicksave before returning to see into the room below.
  35. 35
    Sneak-shoot any remaining alien grunts or use the gauss gun.
  36. 36
    If grunts are not immediately visible, they are likely in the side room below the walkway.
  37. 37
    Go along the walkway to find a ladder, climb down, and kill the grunts.
  38. 38
    Check the side room for needed items, including gauss gun ammo found by crouch-walking into an open metal crate.
  39. 39
    Climb back up the ladder.
Tips
  • To quickly switch between the assault rifle and hornet gun, use the "Last weapon used" key.
  • When encountering the starting crowd, move slowly to the corner until you can barely see around it, then fire a bunch of hornets to sneak-shoot the vorts.
  • When using the whoosh-thing, face the direction you want to be propelled before landing on it.
  • If the vent shaft entrance is covered by a grating, use altfire hornets to break it.
  • If snarks emerge from the vent shaft, wait for them to explode before proceeding.
  • To get onto the top crate with a health pack, jump to it from the upper floor.
  • You can get to health packs on lower crates by taking a running jump from a nearby cement chunk.
  • When dealing with the garage doorway explosion, quickly push forward past the doorway right after opening it, jump-crouching over an explosive crate and running forward to the big gun before the explosions occur, though this method results in more damage.
  • If the door opens glitchily, move out of its way and then go past it.
  • When tossing snarks through the hole in the wall, they may be difficult to throw; quicksave and quickrestore if necessary.
  • To drop into the garage area without damage, carefully crouch-drop onto the back fender of the raised car, then to the floor.
  • If you cannot see alien grunts in the room below, they are likely in the side room below the walkway.
  • Crouch-walk into the open metal crate to find gauss gun ammo.

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