I love the first two Crysis games, they were open ended and you could explore the island and take different routes and use different ways of taking out the enemies. Crysis 2 is a good game but the gameplay compared to the first two was no where near as good. They ruined the suit controls, being able to flick between them using the mouse was quick, easy and felt more natural. Using the keyboard for the suit in 2 just didn't feel right to me they should have stuck to the mouse. Crysis 2 was also a lot more linear and restrictive I would have liked it better if the city was free roaming and not just a linear path. The aliens were completely different to the ones on the Island as well and they didn't seem to work as good as the original ones did.
The story in 2 annoyed me as well, at the end of Crysis Nomad, Prophet, Psycho and that CIA women were headed back to the Island and that is where they should have continued the story from. But instead at the beginning of 2 it's 3 years later, we find out Prophet is infected by this virus and there is no mention of Nomad and Psycho or what happened to them or what happened after they went back to the Island.
Crysis 2 was a good game but not what I expected and it wasn't as good as the first two in my opinion.