Here is the full list of all 17 Recursed achievements.
Explore a level to a depth of 20 chests.
Find the way out.
Collect all crystals.
Do nothing.
Enter 100 cauldrons.
Create an impossible situation.
Instantiate 500 rooms.
Unlocked by unlocking the Recursion achievement.
Collect all diamonds.
Hey, this is fun!
Transform 50 ooblecks.
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.