f25a08f0_Secrets_for_PSP___GameRankings__Unlockable
[How to Unlock] Chill Penguin [Unlockable] 
Once you reach Vile's armor, take it all the way back the upper level route. Bash in the igloo near the beginning of the cave.
Mega Man Maverick Hunter X Cheats, Codes, and Secrets for PSP - GameRankings