More than your average FPS.
Was interesting for a change to fight against other "enemy" nation than Russia (or more likley Soviet Russia).
The gameplay made this FPS more than just a run and shoot game. You need to think like 4-5 steps ahead - in cloack mode I can run until that tree, then super strenght and jump over track and while in the air head shot that guard.
I can't even think of a real bad thing in this game. Even the enemies are realistic - they hear as you move through bushes (even in cloack mode). But it was funny when north koreans shouted in english "kill him", "I saw something" with an accent.
Can't wait for Crysis 2. Hope it will have even better graphics.