Classification: Mobile fighting
Tactic: Circle, fire, and do not sit
A skirmisher orbits at a middle distance and keeps moving. The armor was spent on engines. They would rather not be where the shot was aimed.
Their guns are the quick kind, with a wide swing: cannons, missiles, and turrets that track on their own. They circle the way a wolf circles, and the path is an ellipse you can learn.
Chasing them is how you lose. They are faster. Let them come back around, and be aimed when they do.