I played it twice: once with the help of a mapmaker and once without. You just need to play carefully and systematically (as with all other missions). It's best to explore each available island completely to reveal the surrounding area. As I noticed in this mission, the islands are revealed one after another (when you approach the structure that unlocks a location on the map). And then you go through the dungeons. Personally, I returned to the starting location with Succubi and Warlocks three times, and then upgraded them on another island. When I reached the dragons, there were many of them, but I managed to defeat them. :smile16: