Like jumping puzzles, mini dungeons are scattered throughout Tyria. Find them to complete the Explorer achievement.
— Level 47 rewards.
Mini-dungeons are small dungeon-like areas in open world zones that typically have an associated achievement. As a generalization, there are typically two types of mini-dungeons, with either puzzle solving or combat required to reach the end.
List of mini-dungeons
1 While there is no achievement for completing the mini-dungeon, various collections require the location in some way in order to be completed.