Hi Again, Thanks again for the review copy :) I only have one note so far, and that is that the WASD keys don't seem to work on the "upgrades" screen, I have to use the arrow keys. I'll try to make some time in the next few days to play a bit more thoroughly, and I'll get back to you with any other notes (and write a review) then :) ...

I've tried all of the levels multiple times now, and there doesn't seem to be a reasonable way to grind past one to get the first upgrade. I assume that it gets easier with each upgrade...but that's the opposite of how a difficulty curve is supposed to work. At least one of the levels should be possible to complete with the starting configuration, so that it's possible to advance to harder levels with upgrades....