Anyone that signs up for an account, or links to an existing one, will get the Akumu difficulty level as well as access to cheats such as invincibility, one-shot kills and infinite stamina.
I'm glad developer Tango Gameworks has added options to both ends of the spectrum. I'm sure there are players that wanted more of a challenge, but I struggled with parts of the game even on the regular difficulty. I like the idea of enabling cheats to make the combat easy so that I can dive deep into its twisted, psychological story.
And it's definitely a story worth experiencing—if you've never played before but you're a survival horror fan, take a peek at Joe's review to find out if it's your speed.
I'd wait for a sale, though, because it's currently $60 on Steam. In both June and August it had 60%-off sales, so I'd expect another one soon.