Here's the third multiplayer trailer for Crysis 2. The first video detailed the Nanosuit, the second was all about the guns, and this one talks up the Perks and Dog Tags that you will be able to collect.
As you might expect, here's where Crysis 2 really takes inspiration from Call of Duty, with a range of optional challenges to complete, player tags earned through gameplay, and unlockable bonus abilities. While it obviously has a sci-fi spin, there's no doubt that Crysis 2 is primed to be EA's latest attempt to topple Activision.
You gotta hand it to them for never giving up!