It goes great til you get gear from a crate & they hit you with invisible pay walls that don't let you upgrade items with silver at certain ranks. Example the melee shovel cuts off at rank 4 then you get error messages when you try to upgrade at 920 silver which is earned every battle. The Lewis machine gun won't even let you buy the first attachments for 2500 silver same error message. Customer service is a joke, don't waste your time or your dime here.