I get the feeling this sucker is frequently underestimated...often fatally. If I look at the articulation and the muscle strands...it's a dancer. It's meant to move fast and be lethal with multiple quick and evasive strikes. And at range...hmmm...
I'd say the tubes on the back...they're the wrong configuration for magnetic accelerator rounds...but...using the Metalstorm system...multiple "stormer" rifles. Aim and deluge with insane accuracy.
Actually I think much of the engineering helped make Gandalf Drifter feasible.
If you got good pilots to work her strengths...I'd want you covering my back in a fight. This system's got some good power to it.