Unlockable Modes:
Unlock the following modes by performing the corresponding tasks:
MODE – HOW TO UNLOCK
Boss Attack – Pass the game with the best ending
Curly Mode – Get Curly’s Panties
Nemesis Challenge – Get the Nemesis weapon
Sanctuary Time Attack – Pass the game with the best ending
Wind Fortress – Pass the game with the best ending
Steam achievements:
ACHIEVEMENT – HOW TO UNLOCK