Unlock Alternate Costumes:
Complete the following tasks to unlock the corresponding alternate costume.
Momiji's 3rd Costume:
Complete 25 Ninja Trials with Momiji.
Momiji's 4th Costume:
Complete 50 Ninja Trials total with Momiji.
Ryu and Ayane's 3rd Costumes:
Collect ALL 50 Scarabs.
Ryu and Ayane's 4th Costumes:
Collect ALL 10 Crystal Skulls (available under Normal or higher difficulties).