Fun game, and well made. It feels a bit difficult to get ahead though, because most of the upgrades feel like they have more downsides than benefits.
Glad you thought it was well made. I put a lot of time into sanding off the rough edges. I agree that some of the upgrades have harsh downsides. I think I'll make a normal and hard mode, where normal mode upgrades have less downsides.
Thanks for the feedback!