I barely started but since it doesn't save progress I don't think I will retry soon
The upgrade part is full of cool effects, but it's slow and the upgrades are not clear, so it felt heavy and it became annoying
The game part is very frustrating as you start. Super short time, you miss often, focusing to let your cursor on an enemy is tiring... It should have got the effects instead of the upgrade screen to make the game more juicy and satisfying!
I think you have some thinking work to do and have to be wise, but seeing all the work the game already has, I have good hope the game becomes something good :)