Cheat mode:
Complete one of the following goals to unlock the corresponding feature, which may be enabled at the weapons or game options screens. Worms bleed when shot - Earn gold medal in Basic Training mode.
Aqua sheep - Earn gold medal in Super Sheep Racing training mode
Longbow power-up - Earn gold medal in Euthanasia training mode
Shotgun power-up - Earn gold medal in Rifle Range training mode
Grenade power-up - Earn gold medal in Artillery Range training mode
All weapon crates have sheep - Earn gold medal in Crazy Crates training mode
Invincibility - Earn an Elite rank in Deathmatch mode
Laser sight - Complete mission 4
Jetpack - Complete mission 8
Fast walk - Complete mission 13
Invisibility in multi-player games - Complete mission 16
Low gravity - Complete mission 20
Indestructible landscape - Complete mission 25
Super Banana Bomb power-up - Complete mission 33
Full Wormage game options - Gold medal and Elite rank in all