Loved the whole art style, I always vibe with 2d and 3d styles like this and this is really well done, love the art for the mechs! Combat is nice and quick, just wish there was more feedback because its hard to tell if I'm doing anything with my attack, particularly with melee. But honestly it just needs a bit more polishing and combat would be really good in this game!
Besides that, the only issue is one you already heard with the fullscreen/mouse, everything else is extremely solid!