In the morning they had their breakfast and descended the stairs in the corner of the room to a new corridor that lead east 20 cubits and turned 90 degrees north. The area appeared empty, apart from some rubble and debris, but Rondell spotted occasional footprints of dust or powder that lead around the corner. Following them, they found a Lemure fighting a losing battle with a Greying Ooze. The lemure's head, having already been swallowed by the Ooze gasped for breath, unable even to cry out for help.
Rondell leaped immediately into the fray, hacking away at the greying ooze. Xuvats however, recognizing a primitive version of his own kind, was reluctant to intervene, until the greying ooze began to actively injure their new bugbear friend.
"Hey!" They punched the ooze. "Stop it!" He punched again. "I said stop!" Another punch. Then Rondell stabbed at the ooze with her sword and it sluffed to the ground, releasing the now dead lemure. Xuvats collected a small sample from each for cataloging and they investigated the wooden door in the western wall.
It opened to a forty by seventy-foot poorly lit room. As they continued forward Xuvats could see glinting here and there about the darkened floor. It wasn't until Rondell kicked a helmet left on the floor that they became aware of the low growl echoing about the room. They peered into the darkness and Xuvats was able to see a shadow moving. They lunged out with a pseudopod but struck only air. From the darkness, a great maw of teeth snapped back. Xuvats stabbed into the gaping jaw, drawing blood.
"Stay Safe!" Rondell said through a wad of chewed-up parchment and lunged toward the demon with her sword. Xuvats once again recognized the presence of a Celestial as their membrane began to glow in a golden hue.
"Hello Celestial Vaeros, I am Xuvats, of Thoth MM9. Are you deploying photonic deflection as a defensive tactic?" The aliens said as a magical mutant of eyes and arms, but mostly teeth rushed forward into the light. The Maw Demon carved a large gash in Rondell's Thigh. "... and you call this ..? Shield of Faith, Extraordinary!" Xuvats continued, bashing one of the demon's eye's out.
"A-are you talking to my God?!?" Rondell asked, slashing at the Demon again. She carved the end off the demon's tongue causing it to recoil. Then she disengaged from the beast to gain some distance. Blood ran down her leg as she found a pillar to lean against that gave her some cover.
"Not very effectively, I'm afraid," Xuvats replied. The Maw Demon, knowing nothing else, simply snapped and gnashed, in spite of its heinous wounds. Xuvats closed in on it, growing taller and more imposing, bashing the menace to death.
They took a few moments for Rondell to attend to her wounds and Xuvats was directed to gather up anything that might be of value and bring it into the light beneath one of the few torches. The alien rolled over the room and returned momentarily with a sample of the Maw Demon for cataloguing, a hefty sum of coins, several healing potions, and a spell scroll, all of which the alien gifted to Rondell. Xuvats had also found some Graffiti, a single word painted on each wall, which Rondell translated from Goblin to be Lament, Order, Conjure, and Expose.
They approached the large iron door on the west wall, near the Order graffiti, with caution, remembering what had happened the previous evening. After a brief inspection Xuvats did, in fact, find a similar pit trap to the one they had seen the previous cycle. When Xuvats was unable to disarm the trap, they extended themselves in a tripodal shape about the door entrance and attempted to pick the lock. Learning from last time, Xuvats slipped a pseudopod into the lock and softened it to try and level the tumblers, and the lock popped open, and the floor dropped out beneath their tripod legs.
Rondell attempted to approach the door cautiously and caught her foot on a stalagmite and tumbled shoulder first into the door, whose surface rippled with the sound of rushing water and then rejected her. 
Inside they found a sacrificial plinth with a knight laying atop it. Across the room, on n the southeast wall a door hung from it's hinges. As they moved into the room, the steel door closed behind them, the arcane focus not visible from this side. Xuvats headed for the smashed door on the opposite wall, but a suspicious Rondell took a longer route around the plinth, drawing the wraith's attention as it rose and moved toward her, swinging wildly with a longsword. The undead knight parried her return blows, allowing Xuvats to attack the thing from behind. 
The alien blob moved over to Rondell's side, and could see that she was breathing. On the floor next to her one of the healing potions had tumbled to the floor. Xuvats reached out with a pseudopod and pressed down on Rondell's face, smothering her until she was no longer breathing. He collected a sample of her blood and absorbed it into itself, depositing it into a vacuole to be indexed.