Insane mode:Complete the game to unlock Insane mode.Secret comic:To unlock a secret comic at the inventory screen, collect all artwork.Achievements:ACHIEVEMENT – HOW TO UNLOCKStray Cat (5 points) – Have T. Kemper join the player as a support character.All Together Now (5 points) – Do a 3-member Team-Up Attack.A Winner Is You (10 points) – Beat the first episode.Nine Lives (15 points) – Kill an enemy using T. Kemper