Defeat the Lesser Lich.

Defeat the Greater Lich.

Defeat Ryoken.

Defeat Galaxy Ray.

Defeat the Zebra.

Defeat Ryujin.

Defeat the Cosmic Overseer.

Defeat the Lesser Lich in 55 seconds.

Defeat the Greater Lich without wall jumping.

Trigger Ryoken's countermeasures for wall jumping.

Clear Galaxy Ray's second phase before it can start its large bullet barrage.

Defeat the Zebra without dashing.

Clear Ryujin's first phase without taking damage.

Defeat the Cosmic Overseer by attacking only one of its hands.

Defeat any boss without taking damage.

Defeat any boss with only 20% health or less remaining.