Thank you for your feedback!
After way too many git conflicts during development, we have tried our best to have something fully polished, but it wasn't very possible.
Regarding to the theme, our idea was mainly a tower-defense game, but unlike other games of the genre, this one doesn't have a pre-defined path to it, and originally planned on making the enemies spawn from anywhere. The enemies also do drop a pile of scrap when dying, becoming solid for the other enemies and the player, essentially creating impediments for the enemies and randomizing the play area a bit. We saw it as something that is definetly out of control. But I guess it is a theme that can be interpreted in many ways.