Here is the full list of all 27 PixelJunk Shooter Ultimate trophies - there are 10 bronze, 9 silver, 7 gold and 1 platinum.
Collect your first suit
Advance to a higher league through Online Battle.
Win 5 League Battles.
Win a League Battle with your opponent's final survivor total as 0
Win your first league battle
Purchase an item in Online Battle
Play the game at 11:11
Defeat 'Giant Spitter'
Build a 32x combo
Kill over 100 enemies
Cool your ship down after being set on fire, then stay alive for 5 seconds
Find your first secret area
Collect all other trophies
Kill over 500 enemies
Kill over 1,000 enemies
Defeat 'Frost Grubber'
Defeat 'ALF: 0N50'
Defeat 'The Colonizer'
Defeat 'Terra Kingpin'
Defeat 'The Guardian Of The Deep'
Collect all the hidden treasure within an Episode
Collect all the treasure hidden on Apoxus Prime
Rescue all the scientists within an Episode
Rescue all the scientists
Find all of the secret areas within an Episode
Find all of the secret areas
Complete the secret level 'The Road To Dawn'