Let's start

Skills
[skill]Jagged Strike[/skill]
[skill]Wild Strike[/skill]
[skill]Critical Strike[/skill]
[skill]Way of Perfection[/skill]
[skill]Critical Eye[/skill]
-Critical Agility
[skill]Critical Defenses[/skill]
[skill]Dark Apostasy[/skill]
Atrributes
-Dagger Mastery 12 +x (You can choose to use any kind of rune or not)
-Critical Strikes 12 +2 (IMPORTANT!: You must have 14 in CS. Use a minor rune if your Mask has +1 CS, or Major rune in other piece of the armor if not).
-Shadow Arts 3
Equipment
-Any Max AL armor, with any insignia works. You only need the energy to cast all the enchants. If you haven't enough, attack Acolyte to gain energy because of critical hits and then cast Dark Apostasy.
-Max Dmg. ZEALOUS daggers is required (i don't know if you can do it with another kind of daggers, but I think energy will be a problem without Zealous mod)
Use
Easy. Kill any foe where Acolyte Of Dwayna is, but him. Then, flag far far away your Heroes/Henches. Cast Critical Eye and Way Of Perfection before aggro Acolyte. Then, cast Critical Agility, Critical Defenses and Dark Apostasy. Spam your combo as soon as it recharges, and recast Critical Eye and Dark Apostasy when needed. Enjoy!

Screenshot:
http://img161.imageshack.us/img161/2418/gw203kl1.jpg
PD: Sorry about my english. I do my best >_<
EDIT: I don't know if was necessary, but here is the video: http://www.youtube.com/watch?v=KKcQKjxKRjY