OK, Evil has moved. Now it's to the South, beyond "Eye Island". Therefore, put your training room to the far south so any roaming enemies have to go through it. Build a bridge to the eye - the entrance is on it's eastern side. Take over the torture chamber in it's core, and build a treasure room there! ALWAYS build a treasure room right near a pile of gold like this. It saves the imps OODLES of time when they mine.

Bridge to the east. You get a "make safe" (lines your walls with rock) and "transfer creature" gem over there. There's a "level up" to the West. Build tons of imps! Set your guys to "imprison" the enemy and torture secrets out of them. Eventually run over the enemy - there'll be some BIG battles. Drag in everyone you can ('cept the imps). Finally, kill the LotL.

Dungeon Keeper Walkthough Index