If you're stuck on a particular level or want to play as a boss, use these IGN codes to jump ahead: Square, R1, R2, Circle North Pole: Select, Square, R1, R2, Circle, Square Tokyo: Start, Start, Select, Up, L1 Egypt: L2, Start, Right, Left, Triangle Unlock Sweet Tooth: Available as a hidden character. Unlock Minion: Playable in deathmatch mode. Top Locations to Explore

Enemies are smarter in this version and will actively seek out health when low; be aggressive to prevent them from healing. Essential Passwords & Unlocks

You can chain weapons together or combine them with special attacks to maximize damage.

Explore a secretive base and even enter a large spacecraft.

The final, most difficult stage requiring high tactical awareness. Community Perspectives

Fun local multiplayer, heavy vehicle physics that make ramming satisfying, and a high-energy soundtrack featuring Rob Zombie .

Inconsistent level design and "floaty" physics compared to the original developer's (SingleTrac) style.