Master Cheat Code
Enter Y, Black, White, Black, Y, X, White, X at the cheats screen under the extras menu. All cheats will be unlocked. Alternately, enter Y, X, B, X, Y, A, B, A at the cheats screen under the extras menu.
Master Option Code
Enter White, White, X, X, Y, Black, Y, Black at the cheats screen under the extras menu. All normal game options will be unlocked.
Level Select
Enter Black, Y, X, White, Y, Black, X, X at the cheats screen under the extras menu.
Super Health
Enter X, X, Y, White, Y, White, Black at the cheats screen under the extras menu.
Unlimited Ammunition
Enter Y, White, X, Black, Y, Black, X, White at the cheats screen under the extras menu.
Unlimited Grenades
Enter Black, X, Black, Y, X, Black, X, Black at the cheats screen under the extras menu.
Rapid Rails
Enter Black, Y, Black, Y, X, X, White, White at the cheats screen under the extras menu.
Bouncy Grenades
Enter Black, Black, Black, Black, Black, Black, Black, Black at the cheats screen under the extras menu.
Gibby Explosions
Enter White, Black, X, Y, White, Black, X, Y at the cheats screen under the extras menu.
Gibby Ammunition
Enter X, X, X, X, Black, Y, X, X at the cheats screen under the extras menu.
Fat Mode
Enter Black, Black, Black, Black, White, X, Black, Black at the cheats screen under the extras menu.
Directors Cut
Enter Y, X, Black, White, Black, X, Y, White at the cheats screen under the extras menu.
Walking Dead
Enter X, X, X, X, X, X, X, X at the cheats screen under the extras menu.
Wacky Deaths
Enter White, White, White, White, White, White, White, White at the cheats screen under the extras menu.
Rain Of Fire
Enter Y, Y, Y, Y, Y, Y, Y, Y at the cheats screen under the extras menu.
Explosive Personality
Enter X at the cheats screen under the extras menu. Press Use on someone and they will gib.
Joke Message
Enter Y, X, Y, X at the cheats screen under the extras menu.
Regime
To unlock Regime, do the bonuses missions in single player mode at under the easy, medium or hard difficulty setting.
Fmv Sequences
After clearing a level, you will be awarded the FMV sequence for that level plus another movie. Completing level 1 unlocks a spoof interview with characters from Summoner 2 talking about the Red Faction games. Completing level 2 unlocks a behind-the-scenes FMV sequence.
Funny Message In Multi-player Mode
In the multi-player level 'Watch Your Step', jump off of a cliff and fall. If you look upward quick enough, you will be able to see a hidden message spray painted on the bottom of the level. The message is 'SUCKS TO BE YOU'. An easier way to do this is to play on arena mode and die to become an observer. While in observer mode, move under the platform and read the message.