knowing that the theme was "Tower", i knew that, coming into it, there would be lots of Tower Defenses. i didn't expect many of them to be good, considering how hard it is to make a TD game. this one takes the cake for me though. classic, solid, polished, with lots of content to boot. my only criticism is that progression is a little slow. try adding a "speed up" feature like in many TD games (try Godot's "time_scale" feature maybe?). i also wish the game could run in the background, so i could AFK while doing other stuff.
this is still really good though. i don't know how you managed to do all this in a week. well done.