The map is different than it first appears. You start with a small dungeon in the shape of a pirate ship, surrounded by water. You have some creatures including a reaper that might present a challenge to keep him happy. You can claim the shore right away, but that's all empty path so there's no walls to make an effective dungeon. There's very limited gold and just a single side of gems, with not many different units coming from the portal. However, once you dig into the mainland, you'll quickly find that nothing is there, not a single enemy or obstacle, so I just build a spacious dungeon there. This is still interesting, because the gold supply stays very limited. Quite soon however, a single tunneler will dig down from the massive hero dungeon giving you access, and you don't get the sight spell so you just got to gamble that nothing bad is behind the doors. Here is were the map starts to quickly turn less impressive, as each room just contains a few low level heroes for you to capture and all challenge will stop here. You'll quickly get more gems from this dungeon, and can grow your army to whatever size and strength you like. At some point you'll reach a part where all the doors are no longer locked so you'll have a big fight, but by that time your army is much larger and it will just give you some samurai and lvl10 thieves to train into knights. Because of all the torturing, the entire hero dungeon became revealed so I decided to stop going through the entire dungeon and instead use the destroy walls spell to go straight to the heart and kill the avatar and other heroes there for a anti-climactic victory. I could have won any other way I wanted as I had about 90 high level units.