Snowpeak Ruins

You’re going to have a harder time surviving here than you might expect based on your past dungeon experiences: there’s not much health to be found, and a lot of the enemies can freeze you in place, which causes damage over time. The miniboss fight is also quite bruising. Luckily, you can get some free potions in Room 3, but still, you might want to make sure that you’re at full health with a Fairy tucked away in a bottle just to be sure. If you’ve managed to capture at least 20 Poe’s Souls, then you may want to return them to Jovani for another bottle, and then use that to nab another Fairy. The easiest way to nab fairies is to warp to Lake Hylia, climb the ladder near where you wind up, and smash the crate in the small pond there. You can head into the cave nearby to make the crate reappear, and use your clawshot to drag the fairy out of the lake so that you can bottle it.

Snowpeak Ruins, first floor.

Room 1
Kill the Poe here, take its soul, then head out through the northern door.

Room 2
You’ll meet the Yeti’s wife here. She’ll tell you all about how she found a pretty little mirror...and then promptly got sick. She’ll give you the Mansion Map, and tell you where to find the bedroom key that you need to obtain the shard of the Twilight Mirror.

Room 3
Head through the door to the west to meet up with the Yeti again. He’s making some soup for his wife, but at the moment it’s not very good. You can bottle it, but it’ll only net you two hearts when you drink it.

You can find Ooccoo in a jar in the southern end of the screen, but you need to leave via the northern door to move on.

Room 4
There’s a switch on the ice in front of you; you need to maneuver one of the blocks on the ice on top of the switch to open the eastern door here. You’ve got a free block in the northwestern and southeastern corners of the ice block. For the purposes of this explanation, we’re going to call the northwestern block Block 1 and the southeastern block Block 2. Got it?

Start by pushing Block 2 to the west. Then, push Block 1 to the south, then east, south, west, and south. That’ll push it atop the switch and let you move out to the east.

Room 5
Change to wolf form and dig under the chip in the rock wall here to reach Room 6, the main courtyard of the castle.

Room 6
You will come to loathe the courtyard, but for now there’s not much to do here. Just open the chest near the hole you dug from, then use your senses to spot another diggable hole slightly to the north. The chest in the hole will have a Small Key. Switch back to human form to open the western door here, which leads back to Room 5.

Note the presence of the enemies here. These little frozen iceballs will freeze you when they hit you, rendering you temporarily immobile, if also immune to damage. You can kill them with a couple swipes of your sword. Get used to doing so, because you’ll be fighting them a lot in this dungeon. Move north through the locked door.

Room 7
Defeat all of the iceballs here to unlock the door to Room 8.

Room 8
Ice skeletons! How obnoxious. They’re able to throw javelins, spear you, and block your attacks until their weapons are fried. Still, they can be defeated if you press the attack. Take them both down to unlock the path onward.

Room 9
A...a Pumpkin? What gives? Guess Yeta gave you the wrong address for the key.

Head south through Room 4 and return to Room 3. Speak to the Yeti to give him the Pumpkin. He’ll double the strength of his soup with that ingredient, allowing it to restore a full four heart pieces. When that’s done, return to Room 2 and speak to Yeta again. She’ll point you to another part of the castle. Head through the door she unlocks to reach the eastern side of Room 6.

Room 6
Ignore the white wolves that attack you here and head to the northeastern corner of the courtyard, where an open window will let you climb up and over to the entrance to Room 10.

Room 10
You’ll be shown the cannon in the corner of this room as you enter. You have to grab the cannonball from the icy surface in front of you and run it through the little maze here until you reach the cannon. (You may want to clear out the iceballs before you do so.)

When you reach the cannon, walk up onto the plank behind it and drop the cannonball into it. You can fire the cannon by dropping a bomb of some sort into the cannon as well. Firing it to the west will reveal a chest with some Water Bombs in it, while firing it to the south will open a passage leading to Room 11.

Room 11
Your goal is to reach the Compass in the corner of this room without falling off enough to irreparably damage your life total. It’ll be frustrating!

Begin by creeping over to the eastern side of the room and heading south towards the iceballs. The iceballs aren’t the problem here; you can knock them off the rafters with your clawshot before you ever get near them. Unfortunately, the bats that come down on you are more difficult to deal with. Using sword swipes or spin attacks will often cause you to hang on for dear life on the rafters, so try not to fall off!

Discounting enemies, you have to move out onto the rafters here. Hop over the first small gap, then move along the rafter until you slide down on your butt a bit. You’re almost at another frozen section of the rafter that’ll send you falling into the pit, so turn right and hop to the wooden section of the rafters until you reach the Compass. The other chest here contains rupees.

When you reach the compass, walk along the platform to its north and clawshot your way back to the door.

Room 6
Return to Room 6 and transform into a wolf. Golly may, there’s a buried treasure chest under the snow! Dig it up and pop out the Small Key inside. What do you know, the door on the eastern side of the courtyard is locked! Pop the lock and head inside.

Room 12
Not much to do here at the moment, although this room will be important later. See the odd contraption by the door? That’ll let you move cannonballs between here and Room 6. First, jump up and pull the lever down, then place a cannonball on the spoonish device. Then head back to Room 6 and pull the lever there down to retrieve the cannonball.

Move the cannonball to the middle of the courtyard and place it into the cannon there. Firing south will reveal more water bombs in a chest; firing it north will reveal the door to the next room.