The Game is Exactly like the Previous One Heavy Fire: Afghanistan, which I played on the PS3 (Unfortunately the 360 version never got released).
Very Easy Game. The Achievements are almost the same, except for the added collectables. At $20, it is definitely worth the price, but if you can rent it, go that way, as it is very short.
Also, Veteran Difficulty really makes no difference. Enemies still die in 1 shot. The enemy are just a touch more accurate.