At lvl 255, your atk base goes up to 1,000-2,000 atk
!! so once your
Level: 255
With Attack with proper weapons + lvl: 3-4000 ATK
AC with proper armor + lvl: 3.5-4000 AC
Im really saying once your on the way to level 100 or above , with proper gear, your really strong, you can quad with up to damages up to 500 - 1,500dmg to a mob....
But it also depends on weapons stats