I love the animations and the wave survivor loop was a really good call. I enjoyed experimenting with different weapons and upgrades. The animal themed upgrades were also a clever move, though it did stretch the requirements a little bit haha.
The aspect ratio was a bit funky for me since I wanted to play full screen but then I couldn't see the text at the bottom anymore, but I just played in windowed mode so it didn't bother me.
Overall, I really enjoyed the game and I'd love to see it expanded further or more like it. Keep up the good work!