To much grinding
It a really good game but after the third world world you have to grind so much for better stuff and if you Want to level up you have to spend coin for challenges that when you beat them you don’t get enough coins to repay how much you spent on the weapon and the game is so cheap on coins that you actually have to spend hours trying to save up for a piece of armor/weapon that will be updated in like two levelsAnd they’re such a difficulty Sike that’s unless you just spend all your time in survival Mode and is doubling your earnings by watching an ad you can’t really play any other level