Maintenance Hangars

The Maintenance Hangars are the fourth map in the Third Unit of Ground Zero. This is the place where the Strogg conduct much of their fighter repairs and maintenance. The facility consists of numerous machine rooms connected by narrow corridors.

Quick Level Completion
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Walkthrough
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Differences from Easy to Normal
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Differences from Normal to Hard / Hard+
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Secrets

 * #1) Close to the start you shut off level 1 defenses, shoot the barrel between the two huge pipes opposite the computer to reveal an Ammo bag then push another barrel there to reach it.
 * #2) SECOND VISIT: After re-entering this level from Waste Disposal, jump on the radioactive container to shoot the Shootable Button until the message says: "something was dropped from the container", then use the Enviro-Suit to jump on the toxic slime to get the Invulnerability.
 * #3) SECOND VISIT: In the area where you entered the level the first time (via the air vents), there is a triangular-shaped portion of rocky wall to the right of the right air vent. Shoot at until it explodes (it may take a few rockets to do so), and you will see the message "you released the mutant!". Kill the mutant and get the Double Damage. This portion of wall is INDESTRUCTIBLE until your second visit, so do not try to destroy it until then.

Differences
Coming soon...