I think the concept is interesting -- I was pleasantly surprised when I found out that increasing the weapon's size also reduced its speed, and I think that's a fun gimmick for a game.
However, I do have a number of critiques:
- Some kind of title screen or pause mechanic would add more to the game than you'd think -- it would allow the game to remain open rather than crash on every death.
- For health, displaying numbers (or, even better, health bars) would provide more design clarity than just making enemies and the player more transparent.
- Enemy hitboxes and sprites don't seem to be synced some of the time, at least based on the hit sounds.
- Most importantly -- don't disparage your own work in the description or the game itself! In my opinion, this is by far the biggest mistake you made. It shows a lack of faith in your own work and sets your audience up to be unengaged with it before they even download.
I appreciate the time you put into this project, and I do think the concept is solid!