Immense difficulty spike from 2nd to 3rd stage.
I see you took inspiration from games of the series such as Mario, Rayman and Megaman, yet you didn't absorb what made those franchises enjoyable to play in the first place:
-Good options on how to traverse a terrain (at least for the newest titles)
-Balanced and gameplay: challenging, but fair
-Game mechanics as the core of the stages or of the game itself.
I recommend GameMaker's Toolkit if you'd like to extract some of that information better, Mark Brown - you can find his channel on YouTube - has multiple videos on how and why franchises are praised or diminished in a game design aspect.
Good luck with your game making journey.
Plus: audio only works after first death - very minor complaint since the music doesn't add or subtract much from the experience.