Buy something from Serge
Finish a normal stage or a Vanitas stage without being hit once.
See what lies beneath.
Defeat a boss using a fireball
Juggle 10 times with a Hydra head
Buy everything at Serge's Shop
Defeat Ravage
Defeat Mutorpeel
Defeat Omniscius
Defeat Wyrre
Defeat Sucidem
Defeat Cortupiro
Reach the end of every Vanitas Stage
Unlock Serge's Interface
