Great jon on your first ever completed game!
The art for me is the standout feature, i love the look of the gameworld and the things in it! Great use of pixel art.
My main issue is that the movement speed is sooo slow. I'm not sure if you've made the player and enemy movement frame rate dependant, but if not i think the base movement speed of the enemies and the player should be way faster, then upgrades at the shop for movement speed would feel less like a necassity, and more like a choice of what to spend your hard earned money on.
Still a great submission! You should be proud of making something that looks this good that is actually playable in such a short amount of time!