Secrets (2)

Clear the initial perimeter: Defeat the heroes in the surrounding water, barricade against the blue Keeper, and secure the Horned Reaper. Dig for gold to find Imps(10). Build a Training Room for Dragons/Mistresses. Place the "Increase Level" special found east of your Heart. Sacrifice weak creatures like Demon Spawn for Mistresses/Bile Demons or Fly for research. After researching "Invisibility" and the Guard Post, dig southwest to the water, claim the tile, and build a Guard Post. This creates a height-2 step that non-flying creatures cannot ascend, effectively blocking them. If enemies can't find a path to your Heart, they will wander aimlessly. Build a bridge south from the Guard Post, then sell the connecting tile to break the link, allowing archers to cross. Use a "Conceal" Imp to dig through the southwest impenetrable rock to reach the Horned Reaper(8). Release it to clear out weak dwarfs and archers. Build bridges to other southern earth sections and fortify walls, leaving bridges intact as they prevent tiles from reverting to rock. Do the same for the single earth tile to the green Keeper and fortify walls dug for the Reaper. Dig east below the impenetrable rock near your Portal to find two Imps(7). Continue along the outer wall to find a "Reveal Map" special; use it immediately. Dig and fortify space from the blue Keeper to prevent expansion. Use "Lightning" on Imps if the blue Keeper lacks a graveyard and your gold is sufficient. Dig a path to the blue Keeper's Library and fortify it for later use of "Destroy Walls" for direct access to their Heart, avoiding boulder traps.

Eliminate all Hero presence and secure financial fundings: With both Keepers sealed, focus on financial gain. Target the Gem tile to the west. Use Boulder traps near enemy locations before digging in. Build the largest Treasure Room possible around the two face Gem tile and have 6 high-level Imps dig. Expand the Training Room to increase creature levels. In the southwest pocket, find Archers and a Samurai; use the "Steal Hero" special to capture the Samurai. To the east, an optional hero dungeon contains Giants and Archers. Place Boulder traps near the entrance and break down the door. In the northernmost room is an "Increase Level" special surrounded by Lava traps. The southernmost room contains a "Make Safe" special. Collect gold pots to boost your balance. In the northeastern room, defeat 2 Archers(8) with high-level Mistresses and a Horned Reaper. Clear all heroes, including Archers/Wizard/Samurai in the back room, and dismantle traps.