Secret Places (7)
In the outside area at the beginning, follow along the cliff ledge path until you see a bridge. If you look closely at the wall near this bridge you'll find a very thin ledge. Climb it to find the hole that the gun turret is shooting from.
This handprint is also near the bridge. Press it to open a secret door below the bridge.
Look in the mess hall meat freezer for another handprint. Press it to open a hidden door. Go into the secret room and press on the computer to deactivate the forcefield.
Go to the barracks and look for the only bed with flashing lights. This bed works like an elevator, and it will take you to a secret place.
Press on the hand-dryer in the washroom. Turn around quickly and you'll see a hidden door above the last toilet stall.
Use the blue access card to deactivate the forcefields and enter the command center. Press on the computer shown in the image to open a hidden door to the right. Watch out for the Pig Cop inside.
In the long hallway with all of the different doors (a reference to the "Get Smart" television series from the 1960's), watch the wall on the left for a vent. Go through this vent and turn left after exiting to find a power switch on the wall. Flip it to power up the nearby subway train, which counts as a secret place.
Unofficial Secret Places
There is a hidden door that connects the mess hall and the outside area. It is found at the beginning of the cliff ledge path outside. The door is shaded slightly darker than the surrounding wall on the outside, and is coloured gray instead of blue on the mess hall side. It's rather obvious.
Secret Messages
"Are you small or are you cheating?": Found in the mess hall water current pathway (as the message implies, it requires being shrunken or using DNCLIP).
"Looking for secrets? - DUV": Found in the weather channel security camera room (requires DNCLIP, but using the map editor would be easier).
"C'mon, quit cheating - DUV": Found in the "Your mission: destroy!" security camera room (requires DNCLIP, but using the map editor would be easier).
Secret Combinations
These combination switches are found in the corridor near the barracks and mess hall. The correct combination unlocks the door.
These combination switches are in the room immediately after the previously unlocked door (the area with the command center). The correct combination unlocks another door.
These combination switches can be accessed by shooting the single switch above the computer in the high-security "Mission: Impossible" vault. The correct combination lowers the computer revealing a switch to unlock the vault door.
