my firstkill
tried to solo Hakkar this week, killed in 5 pulls
First of all, you will need combat-prep spec (I used this)
also, buy Elixir of Mighty Agility, Elixir of Mighty Fortitude, Mighty Shadow Protection Potion, Indestructible Potion
ideal food is Slippery Eel
fortitude scrolls and drums with mark and bless will help alot
any battlemaster trinket and dmc: heroism is right choice
First, kill all the "High priest" bosses (bat, snake, spider, tiger, panther). If you cant solo them, you can forget about Hakkar.
Before pulling Hakkar drink shadow absorb pot, wait 1 min, drink armor pot and pull.
use Riposte every time you can
survival cycle: Ghostly strike -> Evasion -> Ghostly -> Prep-Evasion -> Ghostly on cooldown
when shadow absorb pot go off, drink another one
when you become low on hp, use battlemaster trink
If you have troubles with surviving, Valor Medal of the First War will help alot, Bauble of True Blood will be the best choice. Also, you can wear 3p of Deathdealer's set (AQ40), it will greatly reduce your evasion cd.
Sorry for my bad english, feel free to post any comments and constructive criticism