Here is the full list of all 21 Even the Ocean achievements.
Finished Act 2.
Visit the Library.
Visit the Art Institute of Whiteforge.
Finished Act 1.
Use the Journal.
Finished Act 3.
Finished Act 4
Finished Act 5
Finish the game in under 5 hours.
Finish the game in Gauntlet Mode under 3 hours.
Finish Act 1 in Story Mode.
Finish Act 1 in Gauntlet Mode.