Meet the following requirements to unlock bonus characters.
|Unlockable||How to unlock|
|Gargoyle||Complete the Red Side stages (unlocked by beating both the Black and White Side stages in Campaign mode first; difficulty level does not matter) OR reach level 22 in multiplayer mode|
Complete both the Black Side and White Side campaigns on any difficulty level to unlock the Red Side missions. This is a prerequisite to unlocking the Gargoyle character.