Eye of Vortex is the 3rd dungeon in the Xelorium dimension. This dungeon is intended for level 200 characters.

Recipe to craft the key:

Two challenges are required for the Vortex achievements:
 Impertinence: Finish your turn on a cell adjacent to an enemy.
 Focus: When an enemy is attacked, they must be finished off before any other enemy is attacked. Focus fails if you hit an enemy or enemy summon after another enemy or enemy summon has been hit.

XLII's Metronomicon is the second dungeon of the Xelorium dimension. It is located in the Present area.This dungeon is intended for level 170 characters.

The key is required to enter the dungeon. The recipe to craft the key is this:

Two challenges are required for the XLII achievements:
 Barbaric: Use a weapon a each turn on harm an enemy or an ally.
 Tight: Finish your turn on a cell adjacent to an ally.

The Duo achievement must be done in less than 80 turns (with 2 characters or less).

The Fraktal's Megalith is lowest leveled dungeon in Xelorium. It is located in the Gonebyways area. It is intended for level 120 characters.
To enter the dungeon you have to talk to Glitch Hyperia (NPC) and give him the key.

The recipe for the key:

The two challenges required for the achievements in Fraktal's Megalith are these two:
Hermit: Never finish your turn on a cell adjacent to an ally. This can not fail on the winning turn: the final blow may be made while adjacent to an ally.
 Blitzkrieg: Whenever an adversary is attacked, that character must be killed before their next turn begins.