Thank you so much! I'm glad you liked it!
And yeah, earlier in development I had this long list of upgrade ideas that involved things somewhat similar to Binding Of Isaac or games like that have- bigger bullets, multishots, faster bullets, more damage, more shield, etc -but because I knew I was only going to have time to basically make an infinite game progression (rather than a fixed amount of levels) I could see all of that causing some major balance issues if the player could buy infinite amounts of each if they played well enough. I'm definitely not really satisfied with the actual upgrades that got in, but I think obviously the proof of concept at least got across to players.
Haha and I'm glad, those voice clips I did basically last second the day before it was due~