Return to Castle Wolfenstein: Cheats
Upon finding all the secret areas in any given level you will be awarded extra armor, health, and/or ammo.
After finishing the game in single player campaign mode you will unlock the original Wolfenstein 3D.
By performing a stealth kill you will receive extra goodies (dropped by the enemy) as well as your enemies inability to warn their Nazi comrades. If you decide to use a load weapon such as the machine gun your presence will be known and the alarm will sound.
Peeking around corners
By clicking and holding the Left Analog-stick while moving it left or right. The only problem will be your inability to shoot.
Turn off the automatic aim option to get a good head shot. Otherwise, you will lock on to the enemy's body.
Multi-player mode Airstrike
A lieutenant can call in an airstrike by pushing Zoom, then pulling the trigger on where you want the bombs to drop. There is a ten second delay.
Multi-player mode Medical kit
A medic can help his teammates by switching to the medical kit. Push R1 to drop it