Mega Man Zero 2
Hard difficulty setting:
Successfully complete the game. Then, highlight the "New Game"
option and hold L + A. A sound will confirm correct code entry.
Graphics gallery:
Successfully complete the game under the hard difficulty
setting. Then, highlight the "New Game" option and hold Select
+ L + A. A sound will confirm correct code entry.
Alternate Zero armors:
Successfully complete the game under the easy, normal, and hard
difficulty settings. Then, press Start and press L or R until
you get to a menu with Zero's helmet with a different color.
There are pink, black, and red versions.