Real Mega Buster from Top Secret Weapons in Games
The Real Mega Buster is the most powerful ranged weapon in the game and has 300 shots. In Dead Rising, it is unlocked after killing 53,594 zombies and completing the "Zombie Genocider" achievement in a single playthrough, obtaining any ending, and saving at the prompt. In Chop Till You Drop, it is unlocked by completing all of the objectives of the mini-game Second Amendment with an S rank. Any enemy in the game can be defeated with less than five shots, and this gun easily defeats psychopaths.