Pretty cool game, but it its a bit confusing, the crystal part, at first I didn't know how to get there, as my jump wasn't high enough, then I saw that you have dash directions. Then the "dash into through the crystal" was also confusing, as I was dashing left and right and nothing happened, I continue and I was stuck in the first level for 5 minutes or so, then I discover that you have to dash down into the crystal, that could've been explained better. The growth mechanic was cool, thought it wasn't use later, if were I didn't reach that level.
Second level was fine, bit confusing but fine. The third level, I didn't beat as I reach a point as nothing I did worked, the part where you can fall and there is a lot of coins, my jump dashes just didn't reach high enough and I was not able to beat, and the lack of checkpoints destroyed my patience to try again after some 15 minutes.
The art is good, the music is good as well, but it gets so annoying after it repeats a lot of times.
Overall, a pretty cool game with good ideas, it needs more polishing. it has potential to be a pretty good and full fledged out game.