You need to earn coins and full upgraded all weapons because full upgrading a weapon in 9.0.0 requires gems and also bought all those capes and boots they will help you a lot in the update boots and caps in 9.0.0 can only brought with gems.
Is it just me or is the scope on weapons glitched? If I try to rotate my view and shoot at the same time with a sniper weapon, the weapon just snaps back to its original position and then fires. It's extremely annoying,and it makes sniper rifles impossible to use.