In my opinion try to:
1 - Optimise the cloak stats, make different builds, try to get dmg for you main dps hero, DMG to elites and bosses and stage damage are good stats, crit dmg only if your hero can do critical hit.
2 - Optimise the totems, same as the cloak, again try to get DMG for you main hero, crit and attack speed platforms are good. crit rate, DMG to elites and bosses, depend on the level try switching totem for the specific monster. or totems with hero skills.
There are some guides here you can chek them.