Left and Right arrow keys turn, space shoots. D enters debug mode, you can hit a lot of buttons to do things. You can't die because this is literally just to mess around with. You unlock weapons after waves, neither of which are implemented fully. If you come up with weapon ideas I'll give you credit and maybe some sort of special hat somehow, like the secret for 3-4 of my friends in the first game. I have plans for a bit of "story" and junk like that, but yet again, not implemented.
Yeah, this is a total WIP, I just wanted to put something out as sort of a beta. This is a total reworking of Tank Defense, rebuilt from the ground up. All of the art is going to be not taken off of google, so there's going to be an art style. Woo. As it's in beta, you can hit c to unlock weapons, of which there are exactly 2 implemented, default and double. I used TheLogFather's method of having clones fire clones to have enemies shoot, and theChAOTiC's Pen Text engine (not currently implemented fully). TYSM! PS: I GOT THE DOUBLE WORKING!