Recurse
Not unlocked yetExperience recursion
Level select select
Not unlocked yetUse the area select in the hub
Challenge puzzle
Not unlocked yetSolve a red challenge puzzle
Side puzzle
Not unlocked yetSolve a blue side puzzle
Double
Not unlocked yetEnter a clone box
Inverse
Not unlocked yetFlip a box
Push against yourself
Not unlocked yetPush against yourself
Cycle
Not unlocked yetCause a cycle
Oh dear
Not unlocked yetEnter yourself
Solid
Not unlocked yetBecome a wall
Infinity
Not unlocked yetCause a paradox
Epsilon
Not unlocked yetCause another paradox
Paradox paradox
Not unlocked yetCause a chain of paradoxes
Even
Not unlocked yetSolve the Even side puzzles
Oblong
Not unlocked yetSolve the Oblong side puzzles
Friend
Not unlocked yetSolve the Friend side puzzles
One
Not unlocked yetSolve the One side puzzles
Bottom of the rabbit hole
Not unlocked yetReach the end
Alternate universes
Not unlocked yetSolve all non-challenge puzzles in the appendix area
Tidy
Not unlocked yetSolve all puzzles in 4 different areas
200 solved
Not unlocked yetSolve 200 puzzles
Perfect Parabox
Not unlocked yetSolve all puzzles