Knowledge is Power

Easy solo.
1. Before you cross the bridge taunt the Vazzaren the Seeker
2. Bring him across the bridge
3. Tap the boss
4. Make sure Vazzaren the Seeker is inside one of core circles
5. After about 20 seconds Vazzaren is 'Enlightened'
6. Kill Vazzaren
7. Kill boss
Achievement popped. Very quick

Vazzaren is located in the same room as the boss and has to be pulled into the arena.

To enlighten him you have to pull him into the [npc=176583]'s [spell=352394] field at the same time as you would normaly take the boss in for the normal strategy.
He will then heal to max hp and it's free to kill him.
Be careful for his orb aoe ability which will knock you out of the safe zone and most likely kill you.

This boss is/was somewhat of a numbers check and will get easier with gear.

Guardian of the First Ones-
Knowledge is Power

As you aprouch this boss have a look to your left and you will find [npc=180690] located here on the map.
Note: This npc will respawn with the boss if you kill him during the fight and wipe to the boss

You want to pull [npc=180690] before you start the boss encounter, and keep him in the fight.
When you get the first [spell=352394] and you move the boss and the add into the circle [npc=180690] will get the buff
The add gain full health again and you can now kill him to get credit for the achivement.

Be aware of [npc=180690] have a cast that should be interupted and he will drop swirlies on the ground that will knock players away.