So close, finish it off, I believe in you! :P
Top tips to help, you can fire up, through the defences (classic one from the film, Pixels :P), and fire in front, leading the defences, especially when your weapon speed is high.
Disagree with it getting harder as you upgrade, except perhaps movement speed,.. that gets a bit quick, and tricky to nudge along small amounts :P.
Plenty more upgrades or improvements I could have done, with more time, but I had to stick to what I could achieve in the time frame.
Thanks for the advice on filter option, I'll look into that.
Thanks for playing and being my 20th rater :)