Thank you! We loved the idea of having a semi controlled chaos, where you're running around with semi reliable precision on you're aiming, and I discovered the idea of swapping the shoot directions by mistake, and loved the extra control it gave, so we kept it!
You aren't the only one to struggle with that button assignment I think! It might be because you're on a mac. I built this in windows, and the control scheme is based on what I found most comfortable during playtests. Lesson learned for the future in terms of control accessibility!
Equally, the UI does need some serious love. I left way to little time for the UI (and Sound, of which there is none!) And both have suffered for it. Another lesson learned, but to answer the question, technically I had thought of it as an ammo count. The magazine starts at 100, and there's a three second reload when you run out. As someone else has suggested we're going to implement both a visual indicator of how many shots you have left, and also a reload animation.
I love it! It's nice to know I'm not alone in my blunders! I'll have to check your game out!