Here is the full list of all 21 Abyss trophies - there are 4 bronze, 8 silver, 8 gold and 1 platinum.
Get all the trophies
Complete mission 1
Complete mission 2
Complete mission 3
Complete mission 4
Complete mission 5
Complete mission 6
Complete mission 7
Complete mission 8
Complete mission 9
Complete mission 10
Complete mission 11
Complete mission 12
Complete dark mission 1
Complete dark mission 2
Complete dark mission 3
Complete dark mission 4
Complete dark mission 5
Complete dark mission 6
Complete dark mission 7
Complete dark mission 8