Hideout: The Armory

In the first area, find the lever, activate it then find the teleporter to head to the next area.

The second area has the locked main door, another teleporter, and a room with a chest. Defeat all enemies to access the chest then enter the other teleporter.

Find the lever there, pull it down, then backtrack to the previous area. The locked gate there should be opened now. Destroy all enemies along the way then enter the next room. Find all the levers in the adjacent rooms and work your way around the traps. Activate all the buttons in the corners to access the space chest.

Now return to the area where the door has just opened then defeat the remaining goons. You'll find the computer at the end.