Nicely done. I only had one Xbox controller so I didn't get the multiplayer experience. I found it hard to control the turret with the right stick and then fire with A. It felt like R2/Right Trigger would be more natural.
You typo'd Player 1 as Pleyor 1 on the setup screen.
The HUD was partly offscreen on the left hand side for me too. I have a strange 3000x2000 resolution on a Huawei laptop which probably explains it.
You're not far off a complete game here. Good job.