Here is the full list of all 17 Recursed achievements.
Find the way out.
Hey, this is fun!
Do nothing.
Enter 100 cauldrons.
Transform 50 ooblecks.
Create an impossible situation.
Explore a level to a depth of 20 chests.
Instantiate 500 rooms.
Unlocked by unlocking the Recursion achievement.
Collect all crystals.
Collect all diamonds.
Collect all crystals and diamonds in The Oobleck Conundrum.
Enter a room that no longer exists.
Collect all crystals, diamonds and rubies in The Last Tapestry.
Arrive nowhere.