in tutorial, when it say to sell my tower and then place it further down, the creep isn't even in range of the tower and instead deals damage to me, resulting in a softlock.
also, on a similar note, when I try to change it's display from fullscreen to not fullscreen, the window shrinks but the hitbox of the buttons still remain as if it's full screen.
I just tried to recreate the softlock, and what in the world? This bug didn't exist when I released the game in the Spring. Dozens of people played it and had no problem. But now I'm experiencing the exact same softlock as you.
I have no idea what's happening with your windowed vs fullscreen mode, I can't recreate that at all. But I guess the game is unplayable until I have time to dig back into the game's code and re-compile everything, which I don't have time to do right now. Sorry :(
It does work when placing blue first, then upgrading range (upgrading damage results in a softlock for me)
And regarding the display problem, I removed Paint Defense from my "do not disturb" list in my avast antivirus and the windows work now (except windowed x4) turns out avast was just being annoying.
Edit: Scratch that, I think I know now, the softlock happens when you call the wave early, I tried waiting it out for it to naturally spawn and it works everytime, in any combination of color