Ok rated! Review time!
The art style was very charming and easy to look at. The sound effects were quite well done, I liked the reloading sound effect a lot. The upgrades added a lot of depth to the game, but it could be more telegraphed what the disadvantage to collecting an upgrade is. Reminded me of the gameplay of Binding Of Issac, and it was great that you could get so much content out of one room! The only other minor criticism is that the difficulty is quite flat in the beginning, however later on it did challenge me! Overall, a really solid game, good work!