Minor, lesser, and muramite runes, the bracer, and Sludge-Covered Short Sword 1hs 14/19 Effect Vampire Claw (Combat) Str 10, Dex 10, Sta 15, HP 75, Mana 75, End 75, fire 12, dis 8, cold 12, required lvl 66
It's the same mob, but not the same spawn spot. In the 68+ expeditions, the hideous rat spawns in the large room with the fountain looking things, very close to the tunnel that leads to Silentpaw's spawn point. Sorry, don't have exact loc.
Yes, the named you get depends on the level of the person that requested the adventure. If a lvl 66 or 67 requests it the hideous will spawn the Darkrat. If requested by a 68 the hideous spawns Inky. Havent done higher ones yet.