Thanks for the feedback - yeah with the controls, I do spend a lot of time in Blender and playing Japanese games so instinctively mouse up is look up for me. I should have added a controls setting to change it as that isn't common for most people, will update that at some point.
Thanks for letting me know about the spawning bug, that never happened during playtesting so it'll be interesting to figure out what the issue is.
This is also my first game so I appreciate the feedback and will include it in my future games!