@jimmyfenix: Depends on your preferences in shooters. I went back to KZ2 recently as I was considering a shadowfall pre-order. My issues with 2 were:
1. Bad controls (unresponsive and slow once moving - See Space Marine for good "heavy" controls)
2. Really narrow field of view (it made me very motion sick, it feels like you are looking at the world through binoculars).
3. Dark (difficult to see what is going on in the scene, ended up running around areas pressed against the wall to find hallways you are supposed to go down).
4. Boring encounter design (Enemies mostly stay behind cover, wave based fighting, lacks any exciting action or stealth element).
It was probably seemed better in 2008/09. Kind of like Uncharted 1 in 2007.