Pfft. Want to know the most terrifying opponent you could ever face on a battlefield? 

A speedster wielding a recoil-less magical minigun that weights nothing and that scales to whatever tier he's in. For defence, he's got a chargable riot shield that -can not be moved by others if it's been charged- 

Cry out with rage as he trolls around the field, constantly firing, always on the move, never taking hits.

Edit: Heck, it could be a magical Uzi shooting 50.cal shells that would never run out of ammo.