Items from the tool belt are not listed unless they do not work or are not automatically added.
Two sets of mourner gear - you will lose one set during the quest, but the gear is easier to obtain once the quest has been started. More details can be found in the "Making preparations" section.
Tarnished key - if you have lost either key, you may obtain a new one via the Head Mourner's desk, but if there is one in your bank, you will not take one.
You must talk to Arianwyn BEFORE you obtain a second set of mourner gear before you can give it to him, or else it will not allow you to give it to him.
Remove your gas mask and chant-to the blank teleport crystal by standing south-east of the first slave on the square directly north of the jutting out part of the south rock wall.
Proceed to Thorgel in the temple, do not teleport as door will be locked on return!
Go up the stairs, up the southern ladder, down the central stairs, down again, walk through the light door, rotate mirror and enter the west room with the Death Altar and Thorgel.
Talk to Thorgel immediately before the teleport to the death altar. He is near the mysterious ruins. ( 1)…
1
Within the Light.
Talk to Arianwyn.
Investigate the energised pillar.
Talk to Arianwyn.
Use the crystal trinket on the energised pillar.
Talk to Arianwyn. ( 3)…
3
I'm not even going to argue.
Enter the mysterious ruins.
Remember these steps and do them quickly, or you'll have to try again:
Talk to Thorgel to become energised. ( 1•2)…
1
Within the Light.
2
Okay, let's do this.
Exit the altar.
Pass the door of light.
Rotate the first pillar of light mirror by the stairs.
Go up and use the stairs to the north.
Run all the way east then south to the large crystal and touch it.
Run back down the stairs and touch the energized pillar.
Within the light itself[]
Once inside, search the dead slave on the ground.
Chop, then fix the eastern tree with the blue beam.
Solve the puzzles by reflecting the beams to the opposite coloured receivers (i.e. blue to yellow, blue+red to green, green+blue to red, all three to black). You'll need to direct all beams to the newest receiver. Due to how mirrors reflect, you often have to reroute, just keep trying different paths for quickest solution. Refer to the full guide if you can't figure it out.
Exit using the ladder in the southeast. (Not the Portal!)
Sharpshooter[]
If you die, your grave will appear behind the energised pillar. To get there, teleport to the death altar through the Abyss or the wicked hood if the door to the altar is unlocked. You will have to repeat the energisation process again to re-enter the platform puzzle area. Progress of the light puzzle will also be saved.
Reach the platform with the ballista avoiding the spikes.
The ability to add a choice of destination to your crystal teleport seeds. Talk to Eluned in Isafdar during or after the quest with one fully charged crystal teleport seed in inventory. The teleport can't be added if you are carrying more than one crystal teleport seed. The crystal teleport seed will acquire the ability to teleport to a safe area in front of the Temple of Light, in addition to its original Lletya teleport.