Complete one of the following goals to unlock the corresponding feature, which may be enabled at the weapons or game options screen:
| Result | Goal |
| 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 net 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 |