Oversterov

Pain Prevention Complete Puzzle 5 without taking damage

Amateur Puzzler Complete Puzzles 1-7

Vital Ballistics Complete any kill vital worm mission

King's Defender Complete any defend vital worm mission

Damage Dodger Complete Puzzle 6 without taking damage

Odynophobiac Complete Puzzle 11 without taking damage

Detective Complete Puzzles 8-15

Lightfoot Complete Puzzle 15 before Sudden Death kicks in

Last Worm Scout Complete Retro 1 without the Mayor taking damage

Thrifty Complete Puzzle 17 but have at least 1 item left in your inventory that isn't Skip Go or Surrender

Done in 20 Seconds Complete Puzzle 18 before Sudden Death kicks in

Gun Shy Awarded by completing Time Attack 3 by setting the fastest time and without taking Sentry Gun fire damage

Fall Guy Awarded by completing Time Attack 2 by setting the fastest time and without taking Fall damage

Ain't Got Time to Speed Complete Puzzle 19 before Sudden Death kicks in

Holy Moly Complete Fort 11 by using the Holy Hand Grenade

Defused Awarded by completing Time Attack 1 by setting the fastest time and without taking Mine damage

Super Sleuth Complete Puzzles 16-20

Gnat's Nostril Complete Puzzle 20 but have at least 1 item left in your inventory that isn't Skip Go or Surrender

Stalwart Complete Fort 17 without vital worm taking damage

Soak-Crates Collect the vital crate on Fort 18 before sudden death kicks in

Call off the Strike Complete Fort 14 without using the Airstrike

Head Hunter Complete Fort mission 20

Gone Bananas Complete Fort 16 by using the Banana Bomb

Modernist Complete Retro 1-5

Bridge Burner Collect the vital crate on Fort 13 without using the Bridge Kit

Bullet Dodger Awarded by completing Time Attack 7 by setting the fastest time and without taking Sentry Gun fire damage

So Last Year Complete Retro 6-10

Dream Team Complete Fort 19 without losing a worm

An Apple a Day... Complete Retro 8 without picking up a Health Crate

Swift Exit Awarded when the player has set fastest times on all the A-to-B (exit point) Time Attacks

Ain't No Lap Dog Awarded when the player has set fastest times on all the lap-based Time Attacks

The Cratest Awarded when the player has set fastest times on all the Crate Collect Time Attacks

Can't Be Rocked Complete Retro 5 without taking damage

We Don't Need Roads Complete Retro 13 without using the Bridge Kit

Twinkle Toes Awarded by completing Time Attack 13 by setting the fastest time and without taking Mine damage

Leave No Worm Behind Complete Retro 12 with all 3 player worms alive

Stuck in the 90s Complete Retro 11-15

Me Sane Bolt Awarded by completing Time Attack 9 in under 50 Seconds

Worminator Complete Retro 9 and kill all the enemy worms

Child's Play Complete Retro 14 without the Toy Master taking damage

Down-to-Earth Awarded by completing Time Attack 17 by setting the fastest time and without taking Fall damage 

Retrograde! Complete Retro 16-20

Crate Fishing Collect all the crates on Retro 15

Lightning Bolt Awarded by completing Time Attack 6 in under 70 Seconds

Nut 'n' Bolt Awarded by completing Time Attack 4 in under 20 seconds

MOD Runner Complete a Challenge Level 10 Domain