We are capitalizing on the 50 strength and 70 dexterity bonuses which add a big amount of critical and heavy hit chance which is key to dealing big damage.
In addition to mentioned, we have big attack speed increase coming from that dexterity and decent health pool.
All the big damage skills are taken but you can experiment and adjust as needed. Sometimes, it will be good to hurl ice spears on your foes and some battles with tight spaces will benefit from a brutal arrow with gale specialization.