Here is the full list of all 22 Boom Blaster (EU) trophies - there are 4 bronze, 9 silver, 8 gold and 1 platinum.
Unlock all other trophies
Finish the game
Get the goose plasmagun for the first time
Finish chapter 2
Die for 72 times
Shoot for 3333 times
Destroy 300 enemies
Get the double shot for the first time
Get the rocketlauncher for the first time
Finish chapter 1
Get the flamethrower for the first time
Get the rocketlauncher drone
Get the triple shot for the first time
Destroy 100 enemies
Purchase all upgrade in one section
Purchase 10 upgrades
Purchase your first upgrade
Finish the first level
Collect 10 grenades
Collect 15 health packs
Destroy 10 harmless repair-bots
Finish the tutorial