I like the idea of shooting enemies on a moving platform or get upgrades and to survive, there are a bunch of minor problems that add up, like the jump height not being good enough so you always get hit, not being able to directly aim when the platforms move often, bombs not really having a use outside orcs since most things will be dead or fly off, and sometimes the platform goes sideways very quickly where it's very hard to stay on. Or sometimes enemies spawn in a place where the platform is sideways, and they fall into the void right away. Also the upgrade select needs some sort of timer before accepting anything for input, since you can get an upgrade randomly and trying to jump select an upgrade without knowing in less than a second. The music stopping in the menu makes it feel very abrupt and cold feeling, I'm assuming it's in another scene where the default setting to disable music in a new scene is active. The music and graphics are really good. But this needs a little more work on it if you wish to continue working on this in the future for a better flow and experience.