Mega Man Powered Up Cheats for PSP
Complete ALL 100 of the games challanges in Challenge mode.
Unlock Rock - unarmed Rockman/Megaman:
Beat the game on Hard mode (His attack is the Rock Kick).
Unlock Robot Masters:
Using only the Mega/Rock Buster defeat them in New-style mode.
Unlock Charge Shot/Sliding:
Beat every stage on Normal mode.
Download from Capcom's Website.