12 Notoriously Difficult Video Game Achievements Nobody Unlocked

Dead Rising's main campaign already makes for a pretty challenging game of survival, but if players want the ultimate test then they can always attempt the 7 Day Survivor trophy challenge. If you've already completed the game's story and think you can last in the zombie-infested mall for another four days though, you might want to think again.

Because while surviving for that long - which in real time equates to about 14 hours of gameplay - might seem manageable, the twist is that you have to play out all 7 days in one sitting, without any saves or dying even once.

That's bad enough, but to make matters worse the vital health packs - coming in the form of food items in the game - don't respawn, meaning that there's only a finite amount of them to find while you attempt to survive.