[HMM V OFF TOURNAMENT] "Wise Hero"

That's incorrect; you should have exchanged all the chests for experience, which you found while having a higher level of education and before. If you think about it, you can get a basic education at level 3 with Kaspar. You went down into the dungeon too early; you should have explored the surface maps, defeated everyone with skillful logistics, pathfinding, and the Path of War, and captured cities.