To unlock Insane mode, beat the game.
To unlock a secret comic at the inventory screen, collect all artwork.
All Together Now - Do a team-up attack involving all three party members.
Fight 'Em With Items - Use every combat item at least once in the game.
Level Awesome - Get all party members to Level 15.
Nine Lives - Kill an enemy using the feline support character thomas kemper.
Pacifist - Win one battle using only counterattacks.
Pack Rat - Find and collect all of the hidden collectibles scattered around the game.
Stray Cat - Earn a support character.
A Winner Is You - Complete the first episode.
Clean Sweep - Kill all enemies in episode 1.
Silent, But Deadly - Beat the final boss without healing.
Steel Devils - Find and destroy all the robots in the game.
Immortal - Play and win the game without allowing a character to die during combat.