The game is pretty fun, especially when you get really fast and break many different blocks without fails, but I ended up quitting at the inner core level, it was too hard.
But, the best strategy ends up being pretty much just, hold down, chance tool, tank 1 dynamite, and dodge others, especially because you need to be so fast and that minimizes movement, and that's not as fun as planning.
Then there's way too little sounds, you should add: getting damaged, dying, maybe speeding up down, going really fast down (like wind or something), tool chance, retry and menu button click. Maybe there are others too, but those I could hear were missing.
Then some of the sound that you do have, have a lot of noise, so you should fix that by using for example Audacitys noise suppression, or something else if want, that's just what I use.
Then you are missing a lot of feedback for when getting damaged, that sound effect, camera shake, and maybe like a red flash of the screen.
Then the art is really inconsistent, I can see you use assets, the ground and player have a very different style, also there's so many DIFFERENTLY SIZED PIXELS, please scale all pixel art the same size, it's gonna look 10x better, please just do it.
Also a trick that I tell everyone, please use post processing, bloom and vignette will make the game look so much better.