Underground (Part 1)

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The Lost Mission maps

Underground - Sector 1: Mars City Service Sub-Level is the third level of The Lost Mission. The marine must find a keycard in order to go through security to deactivate the lockdown so he may proceed to the next sector to get to Exis Labs. This level is the first possible level to acquire a Chaingun, but it may be missed.

In-Game Information[edit]


Weapons / Items[edit]

  • Grenades
  • Machine Guns
  • Shotguns
  • Chaingun
  • Bullets (small)
  • Shells (small)
  • Clips (small)
  • Clips (large)
  • Ammo Belts
  • Medkit (small)
  • Medkit (large)
  • Armor Shards
  • Security Armor
  • Security Station Pass Key



  • Robert W. Thompson


  • Cabinet #054 - 631