I cleared the game on my sixth try! The difficulty curve ramps up a bit around wave seven but I think it is fair. Some powerups seem to be much better than others, specifically the ones that recover health. The ones that scramble the words might be more detrimental than helpful? My muscle memory for typing kept trying to hit Ctrl+A -> backspace to clear a word so maybe it would be nice to have that in the game.
The music and 3D art are nice. I was hoping Dot would get to drink a soda when I win.