Arbiter's Grounds
Arbiter's Grounds is the fourth dungeon in The Legend of Zelda: Twilight Princess. Link and Midna go to Arbiter's Grounds in search of the only connection to the Twilight Realm, the Mirror of Twilight. Arbiter's Grounds is located at the furthest north point of the Gerudo Desert. Link is told by Auru that Arbiter's Grounds was home to the worst criminals ever. He talks of a mirror that was used for the criminal's chastisement. Link and Midna make the connection to the Mirror of Twilight.
When Link first enters the dungeon, giant Poes steal the light from the four torches, much like in the Forest Temple of Ocarina of Time. Before Link can go any further into the dungeon, he must explore all of the side rooms looking for the Poes to take back the light they stole from the torches. After learning the Poe Scent, it isn't too hard to track them down, as the scent will guide Link directly to each Poe. After killing all of the Poes, Link can venture further into the dungeon. He soon engages in a battle with the Mini-boss of the dungeon, the Death Sword. After defeating it, Link is rewarded with the Spinner. In this dungeon, Spinner tracks are common, allowing Link to reach places otherwise unaccessable. Link uses the Spinner to reach the boss, Stallord. It is a fossil, which Zant brings back to life with his sword. Link must use the spinner to kill Stallord, and he does. Link and Midna enter the Mirror Chamber, where they predict the Mirror of Twilight lies. After Link uses the Spinner to raise the mirror from underground, they only find a quarter of the mirror. They are told by the Sages that the mirror has been broken into four pieces. They tell Link the locations of the pieces and tell Link he must repair the Mirror and defeat Zant.
Enemies
Here are all the enemies that Link will encounter as he travels through Arbiter's Grounds.
Death Sword
Twilit Fossil: Stallord
Dungeon Items
Throughout Link's travels through Arbiter's Grounds, he has the opportunity to collect certain Dungeon Items that will greatly assist him. They are the Dungeon Map, the Compass, the Big Key, and the Small Keys.
Dungeon Map
The Dungeon Map is an item that shows Link the layout of the dungeon he is currently in. It is extremely helpful to Link if he ever gets lost while travelling through the Dungeon. The Dungeon Map is found in the main room of the dungeon, the room with the four torches. The first time Link enters this room, he can get it. After killing the first Poe, Link finally gets the freedom to look around. The Dungeon Map is located to the right of the four torches, across a sandpit. Cross the sand and open the chest for the Dungeon Map.
Compass
The Compass is the item that detects the locations of all the Treasure Chests in the dungeon, as well as where the boss lies. It will then place the locations on the Dungeon Map, therefore allowing Link to know exactly where everything is. It is found in chest by Link as he searches for the third Poe Soul.
Big Key
The Big Key is the one and only item that can unlock the door that leads to the boss. Link must acquire this key in order to complete the dungeon. It is found in the room that lies right in front of the room with the four torches. Link is unable to get it from here because it lies across a pit of bottomless sand. He must instead travel around the dungeon in order to get to the other side.