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Part 53
Half-Life: Opposing Force

Part 53

Navigate the treacherous floating islands of Xen in Half-Life: Opposing Force. This guide details how to survive alien controllers, find vital health and ammo, and reach the Gonarch's Lair.

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Navigate the treacherous floating islands of Xen in Half-Life: Opposing Force. This guide details how to survive alien controllers, find vital health and ammo, and reach the Gonarch's Lair.

Walkthrough
  1. 1
    After surviving the alien controllers, save your game.
  2. 2
    Long-jump to the floating rock with a dead HEV guy, collecting the health pack and armor battery.
  3. 3
    Use the hornet gun to kill the vortigaunt that teleports onto the next rock.
  4. 4
    Long-jump to that rock, then quickly kill the next vortigaunt and the houndeye that appear.
  5. 5
    Carefully navigate the moving platforms around the main island's spires, dropping down until you reach the lowest one.
  6. 6
    Quicksave after each successful drop.
  7. 7
    Move around the island's top surface border and carefully crouch-drop onto one of the four spiky protrusions, ensuring no nearby purple crystals can zap you.
  8. 8
    Use the hornet gun to kill any nearby houndeyes.
  9. 9
    Use altfire hornets to destroy all visible purple crystals, starting with the closest.
  10. 10
    Jump-crouch onto the ledge running around the lower part of the island.
  11. 11
    Slowly make your way along the ledge, using hornets to kill houndeyes and destroy purple crystals until you reach the big healing pool.
  12. 12
    Stand in the healing pool until your health is 100%.
  13. 13
    Examine the rocky wall near the pool with your flashlight to find a small space to crouch-walk through to a hidden alcove.
  14. 14
    Jump-crouch into the large hole in the alcove wall and bash through the vines to reach a room with an alien teleporter.
  15. 15
    Find and interact with the three mushroom-like objects with metal claws on top to open their claws. One is on top of a large rock and requires a jump.
  16. 16
    Find the vines imprisoning three little golden flyer things. Bash the vines to release them.
  17. 17
    Watch as the flyers settle into the open-top shrooms.
  18. 18
    Once all three flyers are in place, the exit teleporter in the center of the cave will open.
  19. 19
    Big rock "fangs" will emerge from the floor and ceiling; quickly run into the teleporter beam to reach "Gonarch's Lair."
Tips
  • Quicksave after every wave of alien controllers if you didn't take too much damage.
  • You might not hear the scientist announce the teleporter is ready; watch for it to form and try jumping in after each quicksave.
  • As an alternative to waiting, run and long-jump around the chamber to avoid controller fire while the portal readies.
  • The gate-opening scientist should remain safe due to the controllers' focus on you.
  • If you are in bad shape after reaching Xen, save your game, then restore an earlier save and retry the teleporter chamber.
  • When collecting the health and armor on the first Xen rock, hide behind the rocky spire immediately after landing to avoid a zapping vortigaunt.
  • If you miss a long-jump to a platform, you can restore a save and try again.
  • Crouching before landing on platforms might help.
  • Quicksave after every successful drop onto a new platform while descending the island.
  • If a dropped-on protrusion has a zap-happy crystal, restore and try a different spike.
  • Use altfire hornets to destroy purple crystals from a safe distance.
  • Move slowly along the lower ledge, using hornets for defense.
  • Use your flashlight to find the hidden alcove entrance.
  • Bash through vines to progress.

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