| Unlockable: | How to Unlock: |
| Unlock 3 Bagger trophy | Kill three worms with one shot (one turn). |
| Unlock 4 Bagger trophy | Kill four worms with one shot (Holy Hand Grenade is probably best). |
| Unlock Alien Successfully | complete all twenty five missions. |
| Unlock Animal Lover trophy | Get at least 200 total kills with animal weapons (for example, sheep). |
| Unlock Barrel Buster trophy | Blow up at least 500 green explosive barrels (overall throughout the game). |
| Unlock Big Blast trophy | Get 500 damage in one shot (getting two worms with 250 HP each in the water with a shotgun is probably easiest). |
| Unlock Body Count trophy | Get at least 500 kills (total throughout whole game; includes multi-player matches). |
| Unlock Boggy The Kid | Successfully complete Wild West part of the story (missions 11 to 15). |
| Unlock Bronze Damage trophy | Get at least 25 000 total damage (overall throughout the game). |
| Unlock Caveworm | Successfully complete the Prehistoric part of the story (missions 21 to 25). |
| Unlock Cyborg | Get all fifteen trophies. |
| Unlock Dino Successfully | complete all the non-Deathmatch challenges faster than Team17. |
| Unlock Gold Damage trophy | Get at least 100 000 total damage (overall throughout the game). |
| Unlock Greedy Worm trophy | Collect at least 500 total crates (overall throughout the game). |
| Unlock Hard Hat | Successfully complete the Construction part of the story (missions 1 to 5). |
| Unlock Hold Until Reworked and Re-Submission maps | Defeat Team17 times in the deathmatches they are used on. |
| Unlock Hot Foot trophy | Successfully dodge at least 500 mines (overall throughout the game). |
| Unlock Magic Bullet trophy | Kill three worms with one shot (shotgun recommended). |
| Unlock Mission and Tutorial maps | Successfully complete the mission/level that uses them. |
| Unlock Professor Successfully | complete all twenty five missions in time bonuses. |
| Unlock Queen Of Sheeba | Successfully complete the Arabia part of the story (missions 16 to 20). |
| Unlock Rocketeer trophy | Use at least 2 000 total jet pack fuel (overall throughout the game). |
| Unlock Royal Knight | Successfully complete the Camelot part of the story (missions 6 to 10). |
| Unlock Silver Damage trophy | Get at least 50 000 total damage (overall throughout the game). |
| Unlock The Beast Within trophy | Get three kills with one animal weapon (sheep recommended). |
| Unlock The Bubble Trouble | Buy the "Darksider" scheme |
| Unlock The Holy Hand Grenade | Buy the "Holy Grail" scheme |
| Unlock The Icarus Potion | Buy the "Mega Powers" scheme |
| Unlock The Inflatable Scouser | Buy the "It's a Mystery" scheme |
| Unlock Weapon Specialist trophy | Get at least 8 000 total damage with the bazooka (overall throughout the game). |
| Unlock Wormenstein | Successfully complete all ten Deathmatch challenges faster than Team17. |
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