Awesome expansion!
Iron sights are what you use all the time unless you are using a sniper rifle. This forces more close quarters combat. The iron sights are a nice change of pace from all the attachments you can use in BFBC2. Each and every weapon in this game is fun to use.
The weapons are all good. Assault class are the M16(Full auto)AK47 and the M14. Medic class are the M60, XM22(Stoner 63) and the RPK. Engineer class are the MAC10 SMG, PPSH-41, UZI and the RPG.
All weapons are unlocked from the beginning, which is nice, but for some a disappointment since you dont have to work for them. The Maps are really nice. You dont have the bland colors you see in BFBC2. There are 5 maps, which are Vantage Point, Cao Son Temple, Hill 137(Hamburger Hill) Phu Bai Valley, and Operation Hastings, which was recently unlocked after everyone online accomplished 69 million combined actions, which ranged from health assistance to ammo assistance.
I have experienced very little lag, matter of fact maybe once out of hundreds of games. The battles are up to 12 on 12 and the options are Squad Deathmatch, Squad Rush, Rush, and Conquest. Different parts of each map are only available depending on which mode you are fighting in.
During Squad DM, the maps are shrunk so as to not create too big of a battlefield. The vehicles are nice but the Hueys can be shot down too easily.
This is no run and gun Call Of Duty so try to bust out your mics since teamwork accomplishes more kills and less deaths. This game in my opinion is above and beyond BFBC2 simply because it feels more like a new game rather then an expansion pack. Like I said in the beginning, you cant go wrong with $15. Its a very fast download, just takes seconds, since this expansion pack was included in the big patch that game out of BFBC2 several weeks back.
Get it, you wont regret it.