Sorry it took me a while to get around to playing this! I got a kick out of the itch page :P
The core gameplay loop is really fun; I ended up getting sucked in longer than I expected to tbh. It's a simple idea, but it's quite well executed and feels good to play. I ended up playing through several runs. The only thing that's actually missing to make it feel complete is a score counter; I think with that one little addition you'd have a really addictive gameplay loop, and everything other than that is just window dressing.
I like the tank controls, too; they take a little getting used to, but I think they add to the challenge, which is really nice.
Also, of course, super cool that it was made without a fancy engine. And the little rotate-y protagonist was adorable :)