Mega Man Powered Up Codes -

Play as Bosses:
Defeat a Robot Master in new-style mode using only the Mega Buster or Rock Buster to unlock that Boss as a playable character.

Play as Blues/Protoman:
Successfully complete all 100 challenges in challenge mode.

Play as Mega Man C:
Successfully complete New Style in normal mode.

Play as Rockman S:
Successfully complete New Style in easy mode.

Play as Rock:
Complete the game in hard mode to unlock Rock (unarmed Mega Man). He has a Rock Kick attack.

Charge Shot/Sliding move:
Successfully complete the game under the normal difficulty setting.