Secrets (2)

Clear the initial perimeter by defeating all heroes in the watery path, barricading the blue keeper, and obtaining the Horned Reaper. Dig out nearby gold to find two Imps(10). Build a small training room for Dragons/Mistresses. Collect the "Increase Level" special east of your Heart. Sacrifice weak creatures like Demon Spawn for Mistresses/Bile Demons or Fly sacrifices for research.

Once "Invisibility" and the Guard Post are researched, dig southwest to the water, claim the tile, and place a Guard Post. This creates a height 2 step that non-flying creatures cannot ascend, preventing them from entering your dungeon. Enemies without a straight path to a dungeon heart will wander aimlessly.

Build a bridge south from the Guard Post and sell the connecting tile to break the link with your dungeon, allowing archers to step over the Guard Post. Use a concealed Imp to dig through the impenetrable rock southwest to reach the Horned Reaper(8). Free the Reaper to attack the dwarfs and archers.

Build a bridge to the southern earth sections and fortify the walls, leaving the bridge intact as tiles revert to earth when bridges are removed. Do the same for the single earth tile leading to the green keeper. Fortify the walls dug to reach the Reaper.

Dig east below the impenetrable rock to the right of your Portal to find two Imps(7). Continue along the outer wall to find a "Reveal Map" special. Use it to see the map. Dig/fortify space from the blue keeper to prevent boundary expansion. Use "Lightning" on Imps if the blue keeper lacks a graveyard and gold is plentiful. Dig a path to the blue keeper's Library and fortify it to use "Destroy Walls" for direct access to their Heart, avoiding boulder traps.

Seal off both bothersome Keepers. Focus on the Gem tile to the west for financial funding. Use the minimap (a small map displayed on the HUD (heads-up display — the on-screen icons showing health, ammo and the minimap), or Heads-Up Display) to find the shortest/easiest path to heroes. Consider placing Boulder traps near hero locations before digging.

Build the largest treasure room possible around the two-face Gem tile and have 6 high-level Imps dig. Expand the training room and level up creatures. In the southwest pocket, defeat Archers and a Samurai to find the first "Steal Hero" special; try to capture the Samurai.

In the optional hero dungeon to the east, containing Giants and Archers, place Boulder traps near the entry and break down the door. In the northernmost room, find an "Increase Level" special surrounded by Lava traps. The southernmost room contains a "Make Safe" special. Collect gold pots to boost your balance.

Head to the northeastern room to find 2 more Archers(8) and kill them, along with any Archers/Wizards/Samurai in the back room, using high-leveled Mistresses and the Horned Reaper. Dismantle all traps.