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