First time I went into the settings I completely missed the other panels in the top right, seem to be missing some keys though still. Should probably center the buttons more so blind people like me don't miss it. Please add an invert mouse Y option. Jumped straight into arcade without going through the tutorial, seemed pretty straightforward though, except for the items. Quite a bit of stuttering when objects are first loaded in. Map feels really close quarter. I personally prefer more cumbersome, slow mechs - would be nice if it had more weight to it, slow to turn etc. But that's just me. Weapons are on the opposite sides from the mouse buttons, feels weird. The mechs spawning in looks pretty goofy. The character portrait seem sort of oddly placed, looks more like its in the middle of dialogue (like in the tutorial I played through after arcade). Would make more sense if it was one a screen. I'd generally like to see more feedback; on getting hit, enemy mech corpses, etc. Looks like there are a lot of different enemy mechs already, nice.
Performance deteriorated completely after playing a while and it pretty much got unplayable. Also the chaingun stopped shooting bullets too eventually, I don't think there was any ammo? Yet? Looked like it was trying to shoot too, its at the end of the video.
Great work, can't wait for the world spanning campaign.