Really nice game.
The art is charming and the white outline really helped with the visibility of the main character and enemies, with the best designs for me being the snake girl and the pig enemy also the background is awesome.
The dash upgrade was really smooth and cool to use in the plataforming sections and the upgrade that let you combine the red balls wasn't clear at first but when i used the balls to open the path and they combined was such a good feel, also the fact that the big ball deals more damage is a great touch. Also i'm curious about what was the upgrade the fourth companion in the end screen was going to be.
The enemies are a little strange to deal with either by their attacks being canceled by you jumping near them or when the level put you in a room with a bunch of them(also the slow camera effect when you kill an enemy isn't good when you are fighing or killing more then 2 enemies at once)
Also the spikes are really deadly and hard to get off when they are in a pit.