Thank you so much for the awesome feedback, and glad to hear you enjoyed it.
The offset with the weapon and the aim was caused by an unfortunate miscommunication between myself programming it and our 3d character artist modelling the mech. Didn't explain to him that the weapon would need to be centred, so that's on me. I might see if I can adjust the way it rotates to see if we can get it always hitting where the mouse cursor is pointed.
Having the weapons above the health bar is actually a great idea, and we might use that. Originally we were going to have upgrades between rounds where the player could buy a new weapon, but we ended up cutting that system fore time.
Adding a skip button into the menu should be an easy fix too, so I'll implement that once the Jams over.
And again thank you so much for the feedback, it really helps :)