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Do not use dawnbreaker unless it's emergency and you need a heal.
Use Standard when you need to top off stam 1/3 way into fight, not before.

Starting Gear:
Hundings and preferably briarheart. If you cannot afford BH, get spriggans. Monster set can be any stam set, I used Nerien'eth until I got Velidreth.
Divines/stam gear with infused/health chest and legs. Sharpened with Poison enchant for melee weapon and infused/berserk for bow.

Intermediate:
Deadly Strike set (you can buy this for starter gear too) or Viper (FG dungeon) and Briarheart, add velidreth set. Get the Maelstrom arena bow for massive dps increase. Viper gives some pretty good damage in my testing.. it out DPSes hundings, not sure about Deadly though.

End Game:
Reliquen and Loki is supposed to be the best. I am not there yet.