To unlock the following Bonus levels, complete the following tasks.

Bonus	How to unlock
Ascension	After unlocking all 3 stages, from the Main Menu, select Archives, and then change the page to Ascension, and enter the following code:
Ascension code	right, up, left	right, right, down	down up down
Gauntlet	Beat Ascension
Moonstone	Play every default level once, then play the Sacred Ground level in Versus mode until it becomes unlocked.
Sunken City	Select Versus mode, then choose the "Random" option when selecting a level. Repeat this until it randomly appears.
Towerforge	Completing the King's Court level in Quest mode.