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