It seems that villain Gorothúl hid some powerful evil relics in Moria. Reports from scouts indicated the likely places to be the Mirror-Halls of Lumul-Nar, and the Water-Works of Nalâ-dûm. Thus did Autumn Tian continue assisting the dwarves.
It had been some time since I had done these two quests, but immediately upon entering each one it came back to me: these were the “puzzle” quests in the storyline! Mirror-Halls required repositioning a few mirrors so a beam of light would open passages deeper, and Water-Works required pulling some levers and turning wheels to open passages and gates.
I set aside plenty of time, but both went pretty fast. I’m pretty sure the mob density was thinned, even on top of the “solo” option, because I only fought about 15 enemies in the entirety of Lumul-Nar. Except for how long it took me to solve the last part… I’ll leave that for later.
Lumul-Nar starts with a giant drop into a snowy cave. At the bottom were two wolves, easily dispatched, and the first hint of what to do: a blocked passage and a lever. There is literally nothing else you can do but pull the lever, which rotates a mirror, in turn bouncing a light beam down a tunnel that now opens up. I proceeded in a similar fashion further into Lumul-Nar.
I made it to the final room, where the puzzle shifts slightly: from a roughly square platform, align mirrors so light beams from the corners meet over a central lens. The only sneaky thing is one light beam requires getting bounced over and back, due to how the mirrors are placed (not just a simple route from each corner to the middle of a side and then into the center). Naturally, I configured it wrong, figured that out when the last beam couldn’t be directed properly, and then had to shift 6 mirrors for the other 3 beams of light plus several for the 4th beam.
While this happened, I started losing beams of light. I went to investigate, and found respawned Merrevail blocking the light beams! Well that’s what I get for being slow, so I had to battle a handful more enemies before finally opening the last web to the final fight with Ergoth, who lamented failing The Eye as he fell to my swords.
Soon I was in the Water-Works of Nalâ-dûm, recalling lizard, grates, and levers. From the entry spot, the only path to follow led up to a wheel. I spun it, which opened a gate below, allowing progress.
I had to try a few times at one spot where there was a wheel and a lever. I spun the wheel, pulled the level and ran down, only to find a grate partially extended over a chasm. After trying again, I remembered passing a gate earlier. I turned to look at the gate when I pulled the lever, and it opened. So I ran up and in, fought a Caerog and then jumped down a hole into some water.
Swimming back I found myself on the other side of the partial grate chasm, with a lever as well. I think this is how a larger group gets across – I remember something about needed one person to spin the wheel while another pulls the lever and runs for the gate before it closes.
In any case, I battled deeper until I found another evil relic, and destroyed it.
The final fight against Caerlûg, a big Caerog. It was a bit tense, mostly because of some giant piston-like ceiling crushers that would stomp the ground. Caerlûg would unleash an attack that knocked me backwards into the air, and I was concerned I’d land under the crushers. I’m not sure if those would have hurt, but I also didn’t want to find out so I would move immediately to a safe spot, and then re-engaged Caerlûg in battle. He fell as well, and I left off with speaking to Stóthkell in the Heart of Fire.