In the section past the evil companions, you?ll find NPC?s representing most of the people who worked on the game. Several of these can give you objects:
Chris Gorski (#5). He?ll ask you to play a ?hunt-the-wumpus? style game. There are probably quite a few answers that work, but the one we found was: E*9, S*2, W, S*3, W*2, Fire West. If you manage to kill the giant gremal in the game, then you?ll win a gremal gun.
Andres Mendez (#6). He?ll give you a quiz about Colombia. The answers are Bogota, yellow/blue/red, 8660, 55% and Simon Bolivar -- but don?t worry; if you get a question wrong, you can just take the quiz again (and again and again if you need to). Once you?ve answered correctly, Mendez will give you the unique sword Spirit of Bolivar.
Brian Ficks (#7). If you have the Hak?u ceremonial blade from the secondary quest Taar's Investigation, then Ficks will offer to ?trick it out? for you. If you accept, then you?ll end up with the Hak?uber ceremonial blade.
Chris Taylor (#8). If you hang out and keep talking to him and keep watching the pillow fight, there?s a good chance that Taylor will eventually drop a fluffy happy pillow.
Finally, at the last door (#9), you?ll need to wear the three items from the Mysterious Set and then (manually) recite the chant ?requo furtivum ixo.? That will cause the door to open, allowing you to access the treasure room. Your mysterious items will disappear from your inventory when you recite the chant, and, inside the room, a goblin inventor will walk around for a second before disappearing as well (we have no idea what the inventor?s purpose might be).
Inside the treasure room, you?ll find three big chests (#10). Each one will drop a bunch of random loot, plus an Easter Egg item: Sarah?s mug of frothing goodness, Borgrim Thul -- the demon?s visage, and Eli?s bucket.