During the events of Blackguards the party earns adventure points (AP) through battles and quests. These can be used to level up characters' Weapon Talents, Talents, Spells, Attributes (eventually), Vitality, Astral Energy, and Resistance to Magic. Each improvement costs a certain amount of points.
Click "+" to improve a skill by one. To undo, click "-". The higher the desired proficiency, the more points that have to be invested.