Snowpeak Ruins
The Snowpeak Ruins is the fifth dungeon in The Legend of Zelda: Twilight Princess. It is a large mansion set within Snowpeak, a frigid mountain in the far north of Hyrule. Link travels to the Snowpeak Ruins in hope of finding the second Mirror Shard. He was told by the sages that one of the Mirror Shards is located on a snowy mountain top. The Snowpeak Ruins is the the most fitting place for the shard based on the sages description.
Once Link reaches the summit of Snowpeak, he meets up with Yeto, who has a Reekfish in his hand. He asks Link what he is doing on top of the mountain, and Link will respond, telling Yeto he is looking for the Mirror Shard. Yeto will say he has the Mirror Shard, and him and Link will sled down the mountain to the Snowpeak Ruins, Yeto's home. Link enters the Snowpeak Ruins and meets Yeta, who tells him she got sick because of the Mirror. She also will tell Link that the Mirror is in the bedroom, and it has been locked away. She tells him the location of the key on the map, and Link goes searching for it. However, the location she told Link doesn't house the key, but it houses the Ordon Pumpkin. Upon telling Yeta what happened, she will tell Link a second location, but this also doesn't contain the key. It contains a chest that houses the Ordon Goat Cheese. Yeta will then give Link a third location, and this one is finally the correct one. Link finds the key and along with Yeta goes to get the Mirror. However, Yeta appears to get possessed by the mirror and turns into Blizzeta. Link must defeat Blizzeta to gain the second Mirror Shard.
Enemies
Listed below are all the enemies that Link will encounter as he searches for the Bedroom Key throughout the Snowpeak Ruins.
Darkhammer
Darkhammer is the Mini-boss of the Snowpeak Ruins. It is a figure that is completely covered by armor, in fact the only part of its body that Link will see is its tail, which Link must attack with his sword to defeat Darkhammer. The battle takes place in a long narrow room, to the very far north of the first floor of the Snowpeak Ruins. The weapon that Darkhammer uses against Link is the Dungeon Item of the Snowpeak Ruins, the Ball and Chain. After defeating Darkhammer, Link can use the Ball and Chain for himself. Darkhammer appears to be guarding the room that contains the Ordon Goat Cheese, as the room directly behind this room is where the cheese is. Whether it really likes cheese or it really likes a challenge doesn't matter, as Link will defeat it either way and continue searching through the Snowpeak Ruins for that second Mirror Shard.