Indeed, we seem to be stuck in a rut... I only found a couple of posts about tactics for playing as the Dungeon. It's obvious that you need to clear out hidden spots, crypts, and resource nodes, but I'm interested in something else: what tasks should you focus on during the first or second week (while building up your castle, for example)?
And if you're lucky enough to find a Red nest, then you might think: "Do I even need to build anything else?" :D Just kidding, of course, you still need to build up even when you're in a good position.
The main thing for the Dungeon is to have targets: Gnome villages, resource nodes, and Hive.
But that's important for all castles.
The first move for the Dungeon is to upgrade Troglodytes – a proven opening.
And after that, everything depends on the map layout.