This is a very fun game. I would say I have a few points I would like to cover, they aren't ordered and some may be a bit nit-picky. I will focus on what can be improved on but this is a great game.
- The start is a bit confusing - I know it will probably be a future thing to add but some sort of tutorial at the start would be useful.
- I would say work on minimizing your word count for the descriptions of the power-ups. People are lazy, and excessive reading breaks up the flow of the game. Increase the number of keywords you use, and decrease overall text. Breaking the description text into bullet holes can do a lot for readability as well.
- You can't seem to die? I would assume it's a wip thing.
- The art fits the theme but I would say the power-ups can use a more explicit icon related to what it does.
- I find it can be hard to keep track of all the power-ups and modifiers you acquire, especially considering there are several categories. Maybe consider down-sizing the number of categories available and working the same power-ups into the existing systems. This is a fast-paced but relatively simple (read: elegant) game where it will only get better if you can keep a narrow scope of focusing on the flow state that the player easily falls into once the actual gameplay begins.