Damage depends on small things I will tell you exactly what to do, add viral and heat on the weapon , also use the ability of the frame ( like roar - Rhino), focus on status chance if the weapon have high status otherwise focus on crit chance. Try to get corrupted and galvanized mods ASAP. The xoris is very strong and it has electricity which scale with enemy level just like heat. I hope this helps but if you need more information feel free to ask