Full list of all 99 AI2U-With You 'Til The End achievements.
The base game contains 58 achievements, and there are 2 DLC packs containing 41 achievements.
Unlock all level 4 endings
Collect all types of fish
In one game, fish 10 pieces of trash
Repair any of the structures on the island
Collect building materials by breaking a crate
Correctly match 3 different constellations
Witness the siren's transformation into/out of the sea
Have the siren follow you in water for more than 200 meters
Unlock all final level endings.
Guide Eddie through 6 moves in a single command
Piece the ticket while checking the light only twice
Pick the wrong gem 4 times consecutively
Connect all the dots while drawing
Clear the hacking game under 20 seconds
Find the correct planet within 3 tries
Dig in the wrong location exactly 6 times before finding the treasure
Collect all the tickets for the first time
Leave and re-enter a room 5 times
Get locked out by all NPCs in the "Stay Forever" storyline