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I, meanwhile, have mastered my island; I haven't ventured into the Dungeon yet, but I've slowly started exploring it. I looked around, and then a demon with a sizable army attacked me. I immediately saved the game as soon as he appeared on the horizon and ran back to my Castle. Fortunately, I had an army there because I had been saving and trying to end each battle with minimal losses. As a result, when he arrived, it was the beginning of a new week, and I had reinforcements. I defeated him on the second try, and I didn't even lose my entire army. The Castle is very helpful when defending properly. After that, it was just a matter of technique. I immediately rushed through the Dungeon to the nearest Castle and captured it. I didn't have any more problems; I defeated everyone without any difficulty.