Right then, having completing the single player game(now going back through again for more achievements) and put a good amount of time into the multiplayer I think I'm ready to cast my vote.
Nice solid
9/10 from me and that's quite a score from someone that doesn't really enjoy console FPS games that much.
The single player game was short, but it was also alot of fun & I really enjoyed playing through the game. It made a refreshing change to not feel as though I'm being channelled through the levels, certainly not on-rails and I loved the freedom to approach and take my routes through the levels how I wanted.
Actually on my second play through of the single player game now going for my "stopwatch" achievements, then it'll be back for a third run for the "ironman" ones. For me it's one of those games I like the idea of replaying rather than thinking "hmm, can I be bothered with those achievements now".
On to the multiplayer, in short pretty fantastic, by far the best console FPS multiplayer game I've played and the fun factor far out weighs both CoD4 & Halo3 for me.
Variety by the bucket load, vehicles, drones, the different classes & skills go such a long way to keeping the game fresh. Also love the way you're free to switch classes mid game, especially useful to me when I get sick of getting pwned on the frontline, I can retreat back to safety and resort to killing people with drones
The team mechanic is very rewarding and for me I prefer the closed communication to the whole team, I'm only really interested in speaking to people within my clan(although I think 5 would have been the magic number for clan teams).
There are some niggles with the multiplayer games(sentry spawn camping for one), as with pretty much all games, but most of my frustration comes from simply being a bit crap rather than poor game design, that's unavoidable in any game

. The fact the developers do seem to be striving to improve the game and are paying attention to peoples comments in the official forum is very encouraging(I wish all games developers cared this much). I've already seen some changes to the game in the short time I've been playing and if this continues the game will only get better with time.
The last mention(and perhaps most importantly) should go to the dedicated servers, very welcome in a 360 game and they do make a big difference for me. Now when I get killed I do feel it's pretty much purely down to my lack of skill rather than lag delay giving me poor hit detection(I'm looking at you CoD4!). 50 player games online on the Xbox360 is just something I never expected to see TBH so the fact that Kaos have managed to pull it off with such style(and with all that's going on with the vehicles etc.) is just amazing!
All in all I think this game is well worthy of a superbulous 9/10, not quite perfect but so much fun it ain't far off, pretty much as good as a FPS can get for me I think