I won't be getting it, but this open beta is pretty cool. They don't have that dead zone lag that the first game had which they were describing it as "weight."
It's sort of like Battlefield. There's a medic class, but it's pretty useless as you can respawn in three seconds or less and the people are so stupid that if you are right next to them, they instead of just staying there for a second, just end up hitting respawn. Engineer class which can set gun turrets and repair reload points. Infiltrator which you take on the name and look of an opponent when active. There's other classes but I haven't used them.