Achievements:
12 Days of Winterval - Deal exactly 12 damage to a worm with 100 health.
Ain't No Lap Dog - Time Attack: Set fastest times on all the lap-based Time Attacks
Armageddon An Award - Use the Armageddon weapon 10 times
Bullet Dodger - Time Attack: Complete Time Attack 7 by setting the fastest time and without taking Sentry Gun fire damage
Cheeky Flocker - Deploy 25 Sheep in any ranked match
Defused - Time Attack: Complete Time Attack 1 by setting the fastest time and without taking Mine damage
Down-to-Earth - Time Attack: Complete Time Attack 17 by setting the fastest time and without taking Fall damage
Fall Guy - Time Attack: Complete Time Attack 2 by setting the fastest time and without taking Fall damage
Fast, Pink And Hard - Win a Pro ranked match in under 3 minutes
Fire Starter - Use fire weapons 200 times
Get Your Lob On - Win a game using just the Grenade
Going Solo - Complete the single player campaign
Gun Shy - Time Attack: Complete Time Attack 3 by setting the fastest time and without taking Sentry Gun fire damage
Hallelujah! - Deploy the fabled Holy Hand Grenade
Lightning Bolt - Time Attack: Complete Time Attack 6 in under 70 Seconds
Likes The Drink - Drown 170 enemy worms
Me Sane Bolt - Time Attack: Complete Time Attack 9 in under 50 Seconds
Nut 'n' Bolt - Time Attack: Complete Time Attack 4 in under 20 seconds
Oldest Swinger In Town - Use the Ninja Rope 1000 times
People's Champ! - Complete all of the community-created missions.
Prod For Victory - Win a game by using the Prod
Ranked Master - Achieve 17 wins in all ranked match types
Six Pest - Kill 6 enemy worms in a single turn
Summer of '69 - Deal exactly 31 damage to a worm with 100 health.
Swift Exit - Time Attack: Set fastest times on all the A-to-B (exit point) Time Attacks
The Cratest - Time Attack: Set fastest times on all the Crate Collect Time Attacks
Twinkle Toes - Time Attack: Complete Time Attack 13 by setting the fastest time and without taking Mine damage
"Forts Pack" achievements
Bridge Burner - Collect the vital crate on Fort 13 without using the Bridge Kit.
Call off the Strike - Complete Fort 14 without using the Airstrike.
Crate Scott - Complete any vital crate mission.
Death Matched - Complete any deathmatch mission.
Dream Team - Complete Fort 19 without losing a worm.
Gone Bananas - Complete Fort 16 by using the Banana Bomb.
Head Hunter - Complete Fort 20.
Holy Moly - Complete Fort 11 by using the Holy Hand Grenade.
King's Defender - Complete any defend vital worm mission.
Soak-Crates - Collect the vital crate on Fort 18 before sudden death kicks in.
Stalwart - Complete Fort 17 without vital worm taking damage.
Vital Ballistics - Complete any kill vital worm mission.
"Puzzle Pack" achievements
Ain't Got Time to Speed - Complete Puzzle 19 before Sudden Death kicks in.
Amateur Puzzler - Complete Puzzles 1-7.
Damage Dodger - Complete Puzzle 6 without taking damage.
Detective - Complete Puzzles 8-15.
Done in 20 Seconds - Complete Puzzle 18 before Sudden Death kicks in.
Economical - Complete Puzzle 3 but have at least 1 item left in your inventory that isn't Skip Go or Surrender.
Gnat's Nostril - Complete Puzzle 20 but have at least 1 item left in your inventory that isn't Skip Go or Surrender.
Lightfoot - Complete Puzzle 15 before Sudden Death kicks in.
Odynophobiac - Complete Puzzle 11 without taking damage.
Pain Prevention - Complete Puzzle 5 without taking damage.
Super Sleuth - Complete Puzzles 16-20.
Thrifty - Complete Puzzle 17 but have at least 1 item left in your inventory that isn't Skip Go or Surrender.
"Retro Pack" achievements
An Apple a Day... - Complete Retro 6 without picking up a Health Crate.
Can't Be Rocked - Complete Retro 4 without taking damage.
Child's Play - Complete Retro 11 without the Toy Master taking damage.
Crate Fishing - Collect all the crates on Retro 12.
Last Worm Scout - Complete Retro 1 without the Mayor taking damage.
Leave No Worm Behind - Complete Retro 10 with all 3 player worms alive.
Modernist - Complete Retro 1-5.
So Last Year - Complete Retro 6-10.
Stuck in the 90s - Complete Retro 11-15.
Worminator - Complete Retro 7 and kill all the enemy worms.