Here is the scenario presented in the Citadel Journal Spring 86, the follow on from the Terror of the Lichemaster campaign - the Vengeance of the Lichemaster.
This issue of the Citadel Journal also marks the introduction of the Skaven to the Warhammer world. There is a set of rules in the journal for using the Chaos Ratmen in Warhammer as well as their history and a guide to painting Skaven by John Blanche. (For some reason these pages are all missing from my copy - no doubt due to me cutting out the pages for the scenario as a kid and ruining the binding!) I do have scans of these pages however that I managed to track down on the internet so if there is interest I can post these up too.
But enough about that, lets get into the scenario itself: