Yep , i'll have to downgrade the score i gave to 4/5 , after you finish the game the upgrades are WAY to expensive , i tried to max Backpack first to get more money , but so far i'm at Backpack lvl 9 at wave 41 , and i only get like 3.5 for wave. And Backpack lvl 10 costs 54.000 , i can't even imagine the price of the other upgrades like damage and armor.
WAY to much grinding.
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