Here is the full list of all 18 Brotherhood United (EU) trophies - there are 8 silver, 9 gold and 1 platinum.
Unlock all other trophies
Beat the game
Defeat Flying Orb
Rapid fire your good old gun
Defeat Crocomire
Defeat Groto
Kill 350 enemies
Defeat Cyclop Walker
Defeat Black Robot
Pass through a mission without using grenades
Defeat Wasp
Kill 100 enemies
Defeat Tank
Save 10 Bros
Get 3 stars on any mission
Reach the end of the first mission
Kill 10 enemies
Finish the tutorial