Note: All rats are usually in shadows or in spots where it would be tortured.

Datacore: Demolition: Immediately after you finish blowing up the CPU with your Cam-Spy you will go down a hallway, and go to the left where you will enter the room with the scientist. You must free him from the Spider Bots so that he can open the door. As soon as you enter the room, go to the back wall, up against the railing. Follow the railing toward the scientist. You should see a part of the floor made of see through glass. There are two places in the room with the glass floor; make sure your looking into the one nearest to the door. Look down and through the glass. You should see the rat on the right side. Note: Its easy to find because it has bubbles coming off of it.


Nightclub: Stakeout: Once you kill the first two guards, go to the main staircase. The rat is just lying at the bottom of the fountain. You can also shoot him.


Subway: Retrieval: Unknown


Rooftops: Escape: Once you get to the ammo bow with a DW-P5 inside of it opened, the rat is directly behind it in the shadows.


Mansion: Infiltration: The rat is found at the left snow mound at end of level near the pond and arena entrance. Its head is buried in the snow.


Laboratory: Rescue: The rat is on a testing machine directly next to the silver keycard.


River: Extraction: Unknown


Trinity: Infiltration: A sniper rifle is recommended. After you defeat the brothers, turn around and go to the left staircase. Once you are down there, zoom into the water and look for a submarine. Once you find it, look on the top, near the entrance hatch. Look to the left and the rat should be there. A second rat is on the launch pad. It is smoking.


Trinity: Escape: Unknown.

Jungle: Storm: Unknown.

Temple: Surveillance: The rat is impaled into one of the spikes in the first trap.


Outpost: Rescue: Unknown.

Arena: Showdown: Unknown.