Full list of all 11 Even the Ocean achievements worth 1,000 gamerscore. It takes around 0-0.5 hours to unlock all of the achievements on Xbox One.
Finished Act 3.
Finished Act 2.
Finished Act 1.
Finished Act 4.
Finished Act 5.
Visit Aliph's mom's house.
You found the Old Ocean.
Visit the Art Institute of Whiteforge.
Visit the Junkyard.
Visit the Library.
Use the Journal.