Here is the full list of all 31 Geometry Wars³: Dimensions trophies - there are 9 bronze, 17 silver, 4 gold and 1 platinum.
Kill 100 enemies with a single Smart Bomb
Score at least 1 million points on any level in Adventure Mode
Geometry Wars³ Dimensions Platinum Trophy
Upgrade any Drone to its maximum level
Upgrade 5 Drones to their maximum level
Earn 3 Stars on any level in Adventure Mode
Earn 3 Stars on all 50 levels of Adventure Mode
Beat the Topaz boss in Adventure Mode
Score at least 100 million points on any level in Adventure Mode
Earn a multiplier of at least 1000 on any level in Adventure Mode
Kill every enemy type found in Adventure Mode at least once
Be killed by every enemy type found in Adventure Mode at least once
Activate each Super State at least once
Beat the Garnet boss in Co-op Mode
Achieve 3 Stars on all 10 levels in Co-op Mode
Collect 1 million Geoms in Adventure, Ultimate or Hardcore
Beat the Developer high score of 11,261,635 on Peanut Dreams in Adventure Mode
Beat the Developer high score of 4,769,150 on Gate Dash in Adventure Mode
Beat the Developer high score of 21,478,525 on Nufo Flow in Adventure Mode
Destroy 10,000 Rocket enemies in total
Complete Deadline Classic without losing a life
Defeat any boss in Adventure Mode without using a Drone Super or a Smart Bomb
Score over 10 million on Evolved Classic Level before losing a life
Score over 500,000 on Twisted Blister in Adventure Mode without moving
Survive for 30 seconds on Pacifism Classic without going through a gate
Survive for 60 seconds on Deflector in Adventure Mode without shooting and pass the level
Score over 500,000 points on Waves Classic without moving
Score over 2 million on Maze in Adventure Mode without dying
Beat the Developer high score of 21,468,350 on Pacifism Classic
Spend 60 seconds outside of the safety King Zones in King Classic
Destroy the cleaner