Clearly a lot of work went into the design of the underlying systems, it has a lot of advanced stuff and controls. The art suffered I feel, and there's no sound whatsoever. While the code has a lot going on technically, there's little to no commenting. Organization is pretty abysmal, and it doesn't look very readable, With variable names something out of C++ compiler directives. The Go style guidelines were almost entirely ignored, but again, I won't knock it too hard for all of the advanced things it has going on.
Gameplay was fun, and was surprisingly complex. Could have potential if it were fleshed out and polished along with the art and sound.