I definitely agree with the other commenters that this is rough and could have used more work. On the other hand I totally understand wanting to leave a project be and move onto other things, for many reasons.
That being said it really does have the feel of a prototype or quickly made short jam game. Finishing and submitting any game is an accomplishment. In a two month long jam
The graphics are okay. It's clear they're thrown together out of what was available, and they go reasonably well together. The only thing that didn't really work is that the game scales graphical assets a lot and they just don't look good starting from such a low resolution.
I do wish it had audio. Audio frequently gets left by the wayside when there's no time left but it really is important to the feel of the game.
It's basic, but plenty playable.
Having power-ups not be universally beneficial is an interesting mechanic and it did force me to think about my strategy. I do wish it was easier to tell them apart- some have very different effects but are almost impossible to tell apart. I think some of the effects also need to be limited for purely technical reasons- one time I picked up so many speed powerups that collision stopped working and the game basically broke.
I also kept taking damage for no apparent reason- maybe running into my own bullets?
I was able to finish the game by being careful and killing 20 enemies. It was tough and it was tense and I felt the difficulty was about right, though I'm not very good at these games so it might have been too easy.
I'm assuming by the lack of updates in the past month that you're not planning on taking this game further? Do you have any other future game dev plans?