Big Head Mode
Rescue all babes in level 2, 'Liberty Or Death', to unlock the cheat option for big head mode.
Submitted by BiGMiKe_B.
Big Gun Mode
Kill all opponents in level 3, 'Nuclear Winter', to unlock the cheat option for big gun mode.
Submitted by BiGMiKe_B.
Flat Shade Map
Obtain all secrets in the secret 'Wetworld', level to unlock the cheat option for flat shade map.
Submitted by BiGMiKe_B.
Ice Skin
Rescue all babes in level 5, 'Fallout', to unlock the cheat option for ice skin.
Submitted by BiGMiKe_B.