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