I had a great time playing this! The skill tree felt like I had some semblance of progression, and the rock music once it started to get intense definitely added to the setting of an intense alien invasion. I found myself constantly holding left click, so it would've been nice to have an "auto-shoot" toggle to keep firing constantly. The movement took me a sec to get used to, but really I was just holding W and spinning around to fire at enemies. In my first run, I put off going down the "Victory" tree until the end, and ended up not finishing that tree since I already maxed out the others and then I got overrun. The UI and effects really made this game feel professional, and I'm now gearing up for another run! Great work.