How do you soec your favorite character? I main Benedict and always choose the extra shield damage on rockets at rank 1, pushback with liftoff at 2, reload speed, and then I focus on increasing his burst damage with his homing rockets. At level 7 I can burst down a Montana at 3/4 health if all 8 rockets hit from his burst.
I couple this with gear to reduce his cool downs, increase his attack and health regen.
Here's a builder to experiment with if you're unsure