I like the intro when you first start the game, Its a small quality of life but its good to have. A custom cursor too is nice to see. I survived 13 waves without doing much and pretty much letting my self die but when I tried really hard I survived to wave 19. It is really unique to give up different parts of the game play when you die but I wish health drops would randomly spawn every so often because it can take so many shots to get health back on a single enemy death. There are many cases when death is the only way to progress which I don't like. The art was a bit simplistic and there wasn't much of a level (would have been nice with cover). I had a blast with this game and you should be proud of what you have done.
Please check out my game if you get the chance, There is a gameplay video if you don't have time to play but I would be happier if you did :)