This was my first Battlefield game played, and I'm loving it. When playing with friends, I'm usually the weakest slayer. So I'll either be assault class with health packs and the defibrillator, or I'll be support with extra ammo, depending on the rest of the squad.
If I'm gaming on my own, I'll be primarily engineer, on spawn I shoot down all the flying vehicles I can, ride shotgun in a tank, or last resort, take a vehicle out on my own and try to build it up. Very tough, when the other flyers seem to have all the cool toys.
The first 4 levels are the toughest... all I did was die. But things get better, and all the ways to help the team without being a powerslayer makes it interesting.