Complete the indicated task to unlock the corresponding event.

Event	How to unlock
Co-op Events 9 to 13	Obtain R.O.B. and complete the Subspace stage in Subspace Emissary.
Co-op Events 14 to 20	Complete ten Co-Op events and unlock all hidden characters.
Co-op Event 21	Complete all 20 Co-op events.
Events 11 to 20	Complete five of the first ten events.
Events 21 to 28	Obtain R.O.B. and complete the Subspace stage in Subspace Emissary.
Events 29 to 40	Unlock all hidden characters.
Event 41	Complete all 40 events.