Game has some good ideas but I think it needed more time to be really realized.
You can lose, I don't know if you can win. Doesn't seem to have a score system or anything to really push you to continue playing once you have all the parts. Wave counter serves in this role but not really.
Ship Assembly! Cool idea, needed something to really make it shine like the ability to choose which parts you get or maybe lose parts when you take enough damage or something in that line. The ship becomes a bigger target but you don't really get much for it other than more damage, and everything dies quickly regardless.
Guns had firing arcs so thats cool, but there was little reason to really favor one side or another even with the theoretically increased firepower when you got a new part.