Underground - Sector 1: Mars City Service Sub-Level

UNDERGROUND - "The Mars City Underground sub-levels consist of the needed infrastructure to support Mars City. The sub-levels also provide a connection between multiple UAC research facilities located on Mars."

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.

Walkthrough
This level is quite easy, only really featuring Zombies and Imps. Start the level entering a decently sized room with some zombies and a locker containing the Chaingun. There is a locked door you need a keycard for, sending you on this level’s goose chase. Go down a ladder and kill some more zombies, and enter onto a narrow bridge with some Imps and a zombie. Go into a room with an Imp at the door and some more Imps spawning in. Enter a large, but cramped room with, you guessed it, Imps. You then enter a space with a PDA, a computer and an elevator. Calling the elevator makes a large swarm of Trites come after you. Kill them and take the lift.

You are now in a storage room with some zombies and Imps. Kill them, along with some Z-secs and go into a catwalk with some Imps and a Commando coming out from the door. Go into that room, which is a small corridor into another room with some zombies and the keycard you were looking for. Go back down to the room you started the level in where you can get the Chaingun with your PDA. There is also some Imps. Go through the door and into a security station where you can unlock a door. The door leads to some goodies and the end of the level.

Characters

 * UAC announcer

Weapons / Items

 * 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

Enemies

 * Former Humans
 * Jumpsuit Zombies
 * Skinny Zombies
 * Maintenance Zombies
 * Fat Zombies
 * Machine Gun Z-Secs
 * Shotgun Z-Sec
 * Commando
 * Demons
 * Imps
 * Trites

PDAs

 * Robert W. Thompson

Codes

 * Cabinet #054 - 631

D3LM-Subterraneo 1