What do you fancy yourself?
While there aren't specific classes i know at least some of you out there have a way you are going to play. A role you'll fill.
I think i will be (at first at least) just a grunt aka cannon fodder.
What do you think you could be considered? Heavy Weapons? Engineer? Sentry? Fearless Leader? Rambo?
You know, that sort of thing. What will be your play-style?