It was short, but interesting!
I liked the graphic style, it felt unique and had a lot of personality. The audio worked well.
The dialogue also had a lot of personality... I've yet to decide if it's my thing or not, but it certainly gave it a specific feel. The end boss dialogue was funny, in a dark way.
Gameplay-wise, it was solid, but did feel like there's still work to complete. I can see the VN style buttons, but there weren't any choices. The platforming section was fine, but the enemies were fairly simple, and the end boss just stood there and let me shoot him. (Though, perhaps this was intentional?)
Overall it felt like a promising start! I'd be interested to see where this might go. Great work!