This is your second "other keeper" level. He's up to the North (again). (is North an Evil Direction?) Build your standard rooms and train everybody up. When you have a bunch of strongish creatures, build bridges to the north and take over the prison. Kill the guys in there. Note while you're doing this that there's a "secret" training room off to the NW (you can see it's shape hidden in the "inpenetrable rocks") with two skeletons for you.

Start "bridging". Bridge over to the enemy. Bridge to the east for an "increase level" gem. Bridge to the west for a "resurrect" gem. Send your massive army across the bridges and demolish your enemy!

Dungeon Keeper Walkthough Index