Level 10, which is just about where you'd think the game would end. Its business as usual from a playing perspective, another message on the wall saying turn back. In a room with no doors or anything, just a hallway around a central pillar and the stairs back up. So I have to check the walls...only, no, the puzzle is considerably different than that. Moving around in the room teleports you to a similar, but different room. I don't really know the specifics of it, but I have to use two keys in two different versions of the room. This opens a secret wall. I know this even before seeing it, since the wasp enemies suddenly start appearing.
But there is one more area. A hallway with "Enlarge my view", written on it. Pressure plates that teleport me back block my path. At first I think there's some walkable wall here, and there is, but that only leads to Boots of Speed, which I assume increase speed. But soon enough I find something on the wall to press, revealing the whole thing to be a fairly mundane puzzle giving me another key.
It takes some time, but I eventually find a switch on the wall that I missed. What does that open? A door inside a big chamber, which reveals a walking suit of armor. He's pretty tough, shrugging off physical attacks quite well. He drops a complete suit of plate armor when I eventually manage to kill him. He was guarding a key...but wait, it opens a room with another suit of armor. So instead of fighting him, I cleverly have the armor fall down a level. Then I check where he was guarding. Nothing. Oh, don't tell me he had something in his inventory? One long fight later, and I have another key.
And then it gets worse. The spider-things respawn, constantly. But I manage to finally kill them all and break through. The empty hallway afterward doesn't make me feel any better. There's a fork in the hallway that doesn't matter much right now. To the south, three doors, with a thing on the wall saying something about cowards. Walking into a room and then out causes all the doors to open, but you can close them pretty quickly. To the west, a pair of non-material beasts. They kill me the first time, which is just great. But I manage to make my way past them eventually.
This Session: 3 hours
Total Time: 13 hours 40 minutes