Hircine's Hunt

Quick Walkthrough

 * 1) Rest
 * 2) Talk to Hircine then walk through the door
 * 3) Either escort Carnius through the maze or kill him
 * 4) Head through the gate at the centre of the maze
 * 5) Either kill Tharsten Heartfang through the maze or kill him
 * 6) Once at the centre of the maze kill Tharsten and head through the gate
 * 7) Kill the Ice Giant Kaarstag
 * 8) Speak to Hircine and select which aspect to fight.
 * 9) Kill Hircine
 * 10) Search the body for your reward then leave
 * 11) Watch the cutscene

Detailed Walkthrough
Rest in any bed. If you're a Werewolf you'll see the transformation cutscene; if not you'll wake up surrounded by werewolves. You'll then be in a Glacier Ice Maze. Talking to Hircine will reveal he kidnapped the 4 toughest warriors on Solstheim so he could lead them through his maze, killing each other until only one remains. He tells you to head through the maze and will then disappear.

Head through the door and you will find Captain Carnius; if you are in werewolf form he will attack you, but if not you will have to escort him through the maze and find the key for the gate. If you're a werewolf, you don't need to find the key and your detect animal skill will allow you to check for the whereabouts of nearby hostile the werewolves. Avoid the Statues of Werewolves and make your way to the centre of the maze.

Carnius will stay behind, but when you go through the door you will meet Tharsten Heart-Fang. If you are in werewolf form he will turn into a werewolf and attack you but if not you can escort him through the maze where he will later become a werewolf and attack you (he will attack you regardless of your actions). Killing him will magically give you the Ring of Hircine, which allows you to turn into a werewolf whenever you want. Head to the centre of the maze and through the gate. You will then be attacked by Kaarstag the frost giant. Kill him, and then Hircine will appear.

You have to choose one of his aspects to fight either Speed, Strength or Guile. Speed turns him into a wolf (very fast), Strength turns him into a bear (very strong) and Guile makes you fight his true form (fast and strong). Kill his aspect and loot its corpse (make sure to wait until you are no longer a werewolf if you transformed for the battle). Watch the cutscene and congradulate yourself; you have defeated Hircine, and by extension the Bloodmoon Prophecy.