Various cheats and hints

Bonus Characters and Bonus Level:
     Successfully  complete  Campaign  mode  under  the  ''I can win''
difficulty  setting  and  after  the  credits a bonus level and 2 more
Characters will appear.

     Complete the bonus level to unlock the bonus level and characters
in 2 player mode.

Unlock The Keeper and The Mistress:
     To  Unlock  the  Reaper and the Mistress from Dungeon Keeper 2 as
playable  characters in the Arena, just take the time to beat Vadrigar
on  the  Fifth  Tier,  this  will  unlock  a level called "The Keeper"
(#5-5), beat this level and these to sweet characters will be yours to
play as in the arena. (They will be after Zeal).

Level Skip:
     During gameplay press and hold R1, R2, L1, and Select at the same
tame  and  press X, Circle, Triangle, X, Circle, Square, Triangle, you
will then automatically win the level.