The quest itself has only one stated step: "I need to gather the symbols that Ritnoc told me about and take them to him." You will not receive quest journal updates for the four symbols you must loot. Main Quest update items (symbols) are from Ornate Chests which will only drop from aggro mobs. All four symbols must go to that single individual. Lockout is 3 days 15 hours on success.
Only one person will be able to complete this quest per entrance.
You may want to do this quest at the same time you are to do The Riddle of Razorwing quest of the Claymore Timeline as the steps for the first 2 floors are identical.
Strategy note: Using the Eye on this Effigy will cause trash mobs in the area to despawn; if you have the eye you may consider training to the NPC and activating it to remove the enemies from the area.
Go back to the first climbable wall on the third floor (back through the hallway to the east after going back down the lift from the Ice Tower), and proceed upward to the floor of fire.
Make your way down the hallway to the climbable wall.
Kill the random mobs (68^^^ 2x epic) on the fourth floor until an Ornate Fire Eye drops (random drop on green mob, not grey).
Strategy note: There are 2 groups of mobs (68^^^ 2x epic) that travel in a circle around the statues on either side, while two path to the climbing wall. Careful maneuvering can avoid them.
Proceed down the hallway to the east and up to the Fire Tower on the fifth floor.
Strategy note: You may consider proceeding through the center room straight to the lift platform.
Strategy note: Using the Eye on this Effigy will cause trash mobs in the area to despawn; if you have the eye you may consider training to the NPC and activating it to remove the enemies from the area.
Strategy note: Any toon or pet that is in range of Sharti will spawn two ^^ (heroic) adds; the dragon does have a knockback. You are encouraged to remove melee pets, set mage pets to maximum distance, have the MT melee, and all others possible range attack. An MA may consider assisting the MT by off-ranking adds, or a chanter may consider mezzing the adds until the dragon is down. (The adds will still need to be killed.) Additionally, you may be able to burn the named rapidly enough to avoid complications from the adds with significant fabled and mastered set-ups.