MOST IMPORTANT TIP: Let the enemy come to you. Further strategy: I found the trick was to focus on Rail Barrage with a Wasp (energy regen, then armor, then crit), then the Torpedo with a bomber (same as wasp), then BFB on another bomber (crit, then movement then whatever, most of the time it's going to be killing itself, too). For when you are using your hulk, the Graviton Smash is it's best attack.