The fountain puzzle is just a friggin waste of time, fetch this go there and come back, repeat. It only serves to prolong the game, pls remove that segment, thank you
Got 5k+ at first try at medium but then I've played this game before. My tips are: maze that minimizes the space for creeps and selective upgrading. Peace.
I am very impressed with this game. I'm dead serious. When I thought that I was about to play another generic zombie shooter, this game proved me totally wrong. 5/5.