Feedback:

Once you get up to a certain speed, you can begin jumping multiple platforms entirely. Consider scaling them with your speed maybe? A few different obstacles would make the game more interesting as well.

Some feedback:

Homing missiles felt largely ineffective because they don't home fast enough or don't turn hard enough to actually hit the target, plus you could collide with your own missiles.

A ship with no thrusters has no real indicator of your thrust direction, making it difficult to determine which way your ship is flying (intentional?)

Seems like it could be a neat idea with a fair bit of polish.

Fun little game!

When you get to the levels where the tiles flash in and out of existence, I would seemingly die mid-jump despite no tiles touching me. The background is a bit intense for this effect as well.

Loved what there was to play so far. Everything about it was great for me and I don't really have much to complain about.

One thing I didn't like was that it wasn't obvious where to go other than "to the back" and then "to the front". You may be thinking of changing that later, I do not know, but in my opinion I think you should give an indicator as to where to get something, especially since it's not exactly easy to descifer what each item on a shelf would be in most cases due to the art style.

The one other thing is that I sometimes found it hard to rush int othe small gaps of the isles as from what I could tell, they were the exact same width as the player. I'd personally make them slightly wider or the players box slightly smaller in order to make movement easier.

Other than that it's great, keep up the amazing work!