I got to Lv. 6 commando this past weekend, and I still find myself relatively useless against FP's and scrakes. Granted, if I spot a scrake from far away I can usually take it down in time (assuming there aren't too many lower level specimens charging at me), but what do I do against FP's?
At first I tried the same tactics that I did with the scrake - try my best to headshot it with auto-fire on from a medium distance, but that proved entirely ineffective. I don't do nearly as much damage to it as I do to practically anything else.
Should I just abandon FP's and let sharpshooters handle them?