You might want to replace the Hwarang with a healer if you don't have at least a +5 Evil Bow though. This was the first run for this TBS on this char so I used all the buffs I can get just in case I'd need them. Check out the video and you be the judge.
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The NPCs here are like paper so do everything you can to draw aggro from them like using AOE scrolls as needed.
Stuff used in this run
This info is provided for whatever help they may be to you. They are not by any means the required setup or anything.
Merc Stats (Normal)
|Cannon Main||11704 - 12802||68181||2631||75850|
|Sheriff||9516 - 10792||49540||1491||62263|
|Hwarang||7189 - 10041||43528||1298||43460|
|Proc||Minotaur & Rudolph Statues, Garuda, Storm Board, Deep Blue Sea Accessories|
|Others||Spelltower, Guild Lvl120|