How do you get the Megaman costume in Dead Rising

Armor: Get "Punisher" Achievement (Kill 10 Psychopaths)
Boots: Get "Unbreakable" Achievement (Get Ending A, the best ending, without being knocked out)
Mega Blaster: Get "Zombie Genocide" Achievement (Kill 53,394 zombies in one game; the most time-consuming achievement to get)
Helmet: Found in souvenir shop in theater

Note: in order to unlock these items, you must not only get these achievements, but also beat the game. For all of the items except the Megaman boots, I don't know if you must beat 72-hour mode with the storyline (unlocking Overtime mode) or just get any ending.

Have fun playing as Megaman!