I just got bug, when you have 0,10 sec attack speed, you cant go lower, but you still can "buy" upgrade, money is taken but theres no upgrade. It should be something to block upgrade option if you reach limit.
You are welcome :) But game can be adictive so good job! I reached 58 level so far and I dont know if its intentional but when I lose its restarted from my last lvl, when I reopen game, its still 58 lvl.
