[BagelNinjaFail]

Aaaaaah, necrobump.
Does this also contain switching? My term for going to a CP and swapping classes in the same life.
If so, I would suggest Sniper to get through the level, but then switch to Trooper when the objective comes. Jedi have a load of health and a powerful projectile, but if you take a few shots then weave and sprint like hell, they won't hit you ever. That's my strategy.
Or, as LFF suggested, laying mines like a boss. :P