Easy, just unlock all the other trophies!
Complete Retro 16-20
Complete Retro 11-15
Complete Retro 6-10
Complete Retro 1-5
Collect all the crates on Retro 15
Complete Retro 14 without the Toy Master taking damage
Complete Retro 13 without using the Bridge Kit
Complete Retro 12 with all 3 player worms alive
Complete Retro 9 and kill all the enemy worms
Complete Retro 8 without picking up a Health Crate
Complete Retro 5 without taking damage
Complete Retro 1 without the Mayor taking damage
Awarded by completing Time Attack 4 in under 20 seconds
Awarded by completing Time Attack 9 in under 50 Seconds
Complete Time Attack 6 in under 70 Seconds
Awarded by completing Time Attack 17 by setting the fastest time and without taking Fall damage
Awarded by completing Time Attack 2 by setting the fastest time and without taking Fall damage
Awarded by completing Time Attack 1 by setting the fastest time and without taking Mine damage
Awarded by completing Time Attack 13 by setting the fastest time and without taking Mine damage
Awarded by completing Time Attack 3 by setting the fastest time and without taking Sentry Gun fire damage
Awarded by completing Time Attack 7 by setting the fastest time and without taking Sentry Gun fire damage
Awarded when the player has set fastest times on all the Crate Collect Time Attacks
Awarded when the player has set fastest times on all the lap-based Time Attacks
Awarded when the player has set fastest times on all the A-to-B (exit point) Time Attacks
Collect the vital crate on Fort 13 without using the Bridge Kit
Complete any kill vital worm mission
Complete any vital crate mission
Complete any defend vital worm mission
Complete any deathmatch mission
Collect the vital crate on Fort 18 before sudden death kicks in
Complete Fort 17 without vital worm taking damage
Complete Fort 19 without losing a worm
Complete Fort mission 20
Complete Fort 11 by using the Holy Hand Grenade
Complete Fort 16 by using the Banana Bomb
Complete Fort 14 without using the Airstrike
Complete Puzzle 18 before Sudden Death kicks in
Complete Puzzle 19 before Sudden Death kicks in
Complete Puzzle 15 before Sudden Death kicks in
Complete Puzzle 20 but have at least 1 item left in your inventory that isn't Skip Go or Surrender
Complete Puzzle 17 but have at least 1 item left in your inventory that isn't Skip Go or Surrender
Complete Puzzle 3 but have at least 1 item left in your inventory that isn't Skip Go or Surrender
Complete Puzzle 11 without taking damage
Complete Puzzle 5 without taking damage
Complete Puzzle 6 without taking damage
Complete Puzzles 16-20
Complete Puzzles 8-15
Complete Puzzles 1-7
Survive the enemy deploying a Concrete Donkey in a Ranked Match and go on to win the round.
Win a Ranked Match by being the last worm standing after deploying Armageddon.
Inflict maximum damage on an enemy worm the turn after they've inflicted maximum damage on one of your worms during a Ranked Match.
Achieve 17 wins in each of the following ranked game modes: Standard, Pro, Crazy Crates and Fort.
Inflict more than 150 damage on a single enemy worm by detonating at least one barrel.
Detonate at least 5 Mines during one turn in a Ranked Match.
Complete the Single Player Campaign.
Knock an enemy worm into the water using only a Mine in a Ranked Match.
Inflict maximum damage on an enemy worm with a weapon during a Ranked Match.
Use the fire weapons 200 times.
Win a Ranked Match using only the Bazooka.
Use the ninja rope 1000 times.
Deploy 25 Sheep in any ranked games.
Win a Ranked Match by being the last surviving worm not killed by the rising water in Sudden Death.
Win any PlayStation Network game using just the Grenade.
Detonate at least 3 Mines during one turn in a Ranked Match.
Name a team and choose hats, speech-banks, gravestones and victory dances for them.
Complete all tutorials.
Spend more than 2000 cash unlocking items in the shop.
We can rebuild him! Collect 6 Health Crates with one worm during a Ranked Match.
Collect more than 10 Weapon Crates in a single Ranked Match.
Kill a worm in a Ranked Match by dropping a weapon from the Jet-Pack or Ninja Rope.
Use every weapon and utility in the game once.
Win a game by using the Prod.
Kill 6 enemy worms in a single turn.
Cause 69 damage to an enemy Worm.