Very polished, Teebz! The general aesthetic with the music and artwork I think worked well together, and I particularly liked the animations for the blue creatures attacking, which...happened to me a lot because it turns out I am not great at this game hahaha.
Two suggestions, both control-related. First, the title screen should probably make it clear to press space to proceed: the "start" looks like a button to click, and my second guess was to press enter...and so I thought it was still loading and just waited for like ten minutes lmao. Unfortunately, since it's a browser game, the game window obscures the controls: in game you do a good job of making the controls clear, but on the start screen they are not.
Second, it may be useful to have some set of controls that make it easier to play for folks without mice (like myself). I'm not sure what that'd necessarily look like (if you're limited to just a keyboard, maybe two buttons to rotate clockwise/counterclockwise would work?). Even if I had a mouse, an arrow showing the current direction I am facing would make it a lot easier to aim. I'm not sure how useful a suggestion this is given how little I play these types of games (probably because I don't own a mouse lol), but if you make another one of these in the future it might be something to think about.