Took me a bit to figure out how the game actually played, despite the really long intro slideshow. I wish there was a way to repair turrets like there is the shields. I think the game also could have benefitted from being a little more zoomed out so you can see incoming threats. Currently, it feels a little more twitchy than I like, especially since tanks can come in at the top or bottom of screen and be within turret range while still off screen.
The music and art are all pretty cool and retro. Once I figured out a strat to manage power, it was a lot more enjoyable. Just took a few tries. Still, my best score was still only 40. Unsure if that's good or not lol.
Well done and cranking this bad boy out in 48 hours! Good job!