Unlock Dressing Room
     To unlock the dressing room, beat all quests on normal difficulty.

Unlock Hard Difficulty
     To  unlock Hard difficulty, beat the game on Normal in either Ep.
1 or 2. The Hard difficulty will be available for both episodes.
     Achieve Level 20 to make this difficulty available online.

Unlock Ultimate Difficulty
     To  unlock Ultimate difficulty, beat the game on Normal in either
Ep.  1  or  2.  The  Ultimate  difficulty  will  be available for both
episodes.
     Achieve Level 80 to make this difficulty available online.

Unlock Very Hard Difficulty
     To unlock Very Hard difficulty, beat the game on Normal in either
Ep.  1  or  2.  The  Very  Hard  difficulty will be available for both
episodes.
     Achieve Level 40 to make this difficulty available online.