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Nintendo DS - Mega Man ZX Advent cheats

Unlock Maniac mode:
Finish the game on the Expert difficulty level to access Maniac mode.

Unlock Mega Man Antique mini-game:
Finish the game on the Beginner or Expert difficulty level to play 
with the Mega Man Antique mini-game.

Unlock Model A:
Finish the game by beating the Bosses and collecting all 24 medals, then 
start a new game. Use the item "A" in your inventory.