TWISTED METAL 4 UNLOCKABLES
Unlock Bosses
Finish the game once with any character. After Sweet Tooth is defeated, save the game and watch your character's ending sequence. All of the Bosses, including Crusher, Moon Buggy, Super Thumper, RC Car, Super Axel, Super Slamm, Super Auger, Minion, and Sweet Tooth will now be unlocked.
Bonus deathmatch levels
Finish any tournament mode level, and then save the game to a deathmatch mode level. Each completed tournament level will unlock a new deathmatch level.