I honestly loved the game. The atmosphere was unbelievable, the music/soundtrack was perfect, and the AI was pretty decent.
The AI, specifically, had some very good points and one really bad point. First of all, they worked like real soldiers should... they moved from cover to cover in rotating order (just like int he movies and such), and used the cover to attack. They would follow you around, and take cover if you took point. This was great for a kamikaze like me... I'd go after corners and such, and those in the open would be under supressing fire by my teammates, keeping me alive.
One neutral point is that the missions constantly change and you have to get orders from your SO. So the SO is invincible. This is a bad thing you can abuse (use him as a flesh shield). It'd be nice to make him mortal, but I see why they did it (you can get lost REAL easy in that game without orders).
The bad thing? If any of your teammates take point and start getting shot, they stand there and raise their gun in an attempt to fight back. This usually made them a bloody mess if not completely kill them off. I was expecting that if someone was shot (hell, got shot AT), they'd find the nearest cover and hit the dirt! Instead you have a lot of kamikaze fighters that are stupid in the open field.
The best part, though, is the russian campaign. The beginning is the beginning of the movie "Enemy at the Gates" (sans Rachel Weisz, unfortunately). Try and flee, and SO's will start shooting you. You start with a clip and hope that someone with a rifle eventually dies in a place you can get it (you are under extreme fire from placed 42's under german control... you usually stay under cover or get sliced up. I went the whole first part without having a weapon... just going from cover to cover and awaiting reloads. Then in Stalingrad you are eventually promoted and given a sniper rifle. Something I'm absurdly good at, so the rest of the missions I did quite well.
The only two really negative things I can say about the game:
1.) Too easy. Maybe I abused quicksave/quickload, but I found the game to be pretty easy.
2.) Far far far too short! I finished the game in 3 evenings, and I only play from 8pm - 10pm. So ~6hours to finish the entire thing? I found myself wanting more and more and more.
There is a multiplayer, but you won't see me playing it unless I get good reviews from others. The problem with multi in a game like this is instead of playing it as a team (cover to cover), you end up playing it in an every-man-for-himself team deathmatch which I don't dig anymore... I want a real war experience, not 14 year olds telling me I'm a n00b and camper for taking cover and such.