Blizzeta

Blizzeta is the boss of Snowpeak Ruins, the fifth dungeon of Twilight Princess. The boss is Yeta, a Yeti that leads Link to the shard of the Twilight Mirror (which she holds). She becomes possessed by the mirror and tells Link he cannot have it. The boss fight now begins. At first you have to use the Ball and Chain to chip away at the ice surrounding her until barely anything is left. Now she rises into the air with a few spikes of ice. At first the spikes will fall and try to impale you, but as long as you keep running they wont touch you. If you can, break one of the spikes with the ball and chain. After that, they all get called up again and they will float directly above and slam into a circle around you. If you managed to destroy one, then quickly run out of the circle before she falls down. At this point take a shot at her ice shield with the Ball and Chain. Do this a few times and she will be defeated, getting you the second piece of the Twilight Mirror.

Trivia

 * Since the only weapon that can be used on Blizzeta to cause any damage is the Ball and Chain, this boss does not ewxperience a Critical Point, or a narrow space of time where Link is able to strike at a boss in fatigue, or other state, denoted by a triumphant music change.