Adityakhasi

Good day too all. Sorry for a newbie question Last monday i duel my destroyer with 11k p.a with full buffs to a magnus cant remember his full name he has Lord on his name. And I only crit him 400 damage, he said its gap im lvl 132 and hes 150 but even it is level gap i should have damage a little more like 2k to 3k. Can anyone tell me what is the good p.a and dex to make my destroyer, destroy players... :)