The graphics need work they are very rough, edges are pixelated even at the highest settings, they will most likely work that one out in the final. Don't like the fact the the guys disappear after they are dead, they should give them a decay effect, has it hard to find they're weapons with no body around, shoot and within 5 sec the bodies gone. The amout of keys needed makes it more like a simulator, I have palyed quite a few FPS's and for the most part use default settings, if I have to move my left hand to the other side of the keyboard just to do a simple function like drop a weapon there is something wrong, I realize I can bind keys, but that is one of the things I look at when playing new games (Do I have to think about where the keys are). Next, I can be hiding in the brush and can see my bullets bouncing off the leaf infront of me with a guy dead in me sights but his bullet goes right through the leaves, it a leaf not a piece of one way kevlar, this is also an issue that I think the will work out though. The last one is more with the reviews then the game, they are all making it sound as if you can go anywhere and there are no limits, which is untrue. You can not pull up over walls to sneak a look, easly add, a form of this was used in the whole Tomb Radier series. Also I think you should be able to scale cliffs. In multiplayer the AI will just go to waste for the most part and you will never see it, I think the last two thing would be better supported in multiplayer, give you more options. This game is setting up to be a snipers/campers game in multiplier either way.
If I can think of any more I will left you know.