I like the good use of pixel art, the gameplay was simple but quite challenging as well
Nice work!
I remember playing those old only one level games with the blue elephant a while back. I love how you added things like rumia's darkness and the danmaku at the last stage. The controls were a bit floaty, was the orginal only one level games like this? there was alos some weird issue with the title screen being cropped on my end.
Overall you did a good job!