I'm going to give it a 7.
In all honesty it was an ok game, but I expected more of a challenge from the bosses, I mean usually in games bosses have a ability or technique that would be hard to dodge or something, but here I found it easy to dodge each bosses abilities, either that or I discovered their patern too quickly.
One more thing I didn't like (which adds to the challenge thing more) is I didn't like the fact the begining gun had unlimited ammo. (so far as I can tell.) I aslo wished there was a dificulty option, on the side note was there no melee attacks for when they got into your face was there?
As for the people saying it's a dead space rip off, I can't help but agree with them and point somethings out. In dead space Isaac started hallucinating after being struck and attacked by the necromorphs. whatever was in their bloodstream, saliva etc. was causing the crew to turn on each other and eventually caused insanity. His hallucinations got worse after seeing the marker they preached about.
On another note, I wish there was a bigger variety of monsters, weapons, and the freedom to upgrade what you would like.
It's still a fun game to play but could you perhaps try a little harder on this?