Here is the full list of all 17 Recursed achievements.
Transform 50 ooblecks.
Instantiate 500 rooms.
Explore a level to a depth of 20 chests.
Hey, this is fun!
Create an impossible situation.
Unlocked by unlocking the Recursion achievement.
Collect all crystals.
Collect all diamonds.
Find the way out.
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.