Unlock the following maps by performing the corresponding tasks:
MAP - HOW TO UNLOCK Ruins map - Get over level 11, then play on a level 11 and over channel. Castle map - Get over level 21, then play on a level 21 and over channel. Dungeon map - Get over level 21, then play on a level 21 and over channel. Berserker mode - Get over level 21, then play in an Expert channel.