This game looks absolutely amazing! I love that you made the camera go all the way back down to the start when you lose, it definitely gives the game a sense of space. The 3D and 2D mix works really well here. as does the lighting and all the small particle effects you have flying around. The aesthetic is top notch!
The music is really good, and works very well with the visual aesthetic. It has some instrumentation choices that definitely add positively to the whole videogame vibe lol.
In terms of feedback:
I think the jumping can feel a bit floaty at times, which I think you designed around given that sometimes there's really wide spaces in between platforms. It feels responsive enough and it's something you can get used to, but maybe it's something you could take a look at if you continue to work on this game.
I feel like sometimes it's inevitable to take some damage. A monster will spawn moving away from the platform you need to jump on, and since the screen is slowly moving up, you can't really afford to wait. This makes me feel like the game sometimes just decides to take a life away, instead of making me feel like I messed up. This can work if you design around it a bit more, like maybe making you jump if you touch a monster so there's a balancing act between moving and keeping your health up, or maybe having more ways of dodging the monsters. Just some ideas!
Having no sound effects was a bit unfortunate. I feel like it could add a lot to the game feel and overall aesthetic! It would make everything feel more alive and responsive :)
Very good entry, keep up the good work!