It would of been 10 if multiplayer was perfect.
The only thing that let this game down was the multiplayer glitches, like most people i lost both my level and weapons from the multiplayer glitch while my friend still had everything!!!
But after another hour of playing by myself i got back to where i was fast beat the game in about 4 hours and had fun, The multiplayer was fun but you could only play with you and 1 friend if there was 3 or 4 people playing it would crash so the one on ones were by far intense and Extremly addictive.
I do not know if the multiplayer works, since i have not played it to see.
And the final thing that have to compliment about the game is the fact that the difficulty was absolutely perfect for every level, it wasnt too hard to kill you repeatedly but it wasnt too easy to just sail through the levels, Top notch to you
-Alex