First off i like the ambition to attempt multiplayer games in fpsc, and it looks good so far. The one thing that i think you may want to change is the names of the characters so it makes it easier to know what character you are selecting.
I just played and hear is my review:
I like the setting and the maps were bigger than i anticipated, But the only problem with that is it may be hard to find people if you only have two playing which may be the average you get since there are so many multiplayer games already out there. Also the weapons have different pickups, what i mean by this is that some you have to press enter to pickup and others you auto pickup. I cant really say anything about the fun factor yet because i cant since i was just roaming the map.