Hmm, mostly it was finding handles hidden around the room so we could operate the incinerator itself. [He explains as they go.] The machine needed all the levels to be even to function, it was something like a math problem I suppose? I doubt real incinerators are so simple.

[When they got to hallway of said puzzleroom he pauses.] ... maybe it is on, it feels a little warmed around here, doesn't it?