Floor 1 (5)

Head west to find a block with a bell on it and a sign. Read the sign to note the bell order: two on the bottom, two on the top, with the top ones between the bottom ones.

Head south and around to find a pit, two Ice Keese (enemies that fly and can freeze you), and a switch.

Use the Boomerang to hit the switch, opening a door to the left.

Kill the two Ice Keese with the Boomerang. A chest will appear back where you came up. Open it for a piece of Treasure.

Push the first bell south, then west to move it into the central room with the other bell.

Push the second bell north, west, south, east, south, west, south to move it onto the bell tile.

Recall the bell order from the sign (medium, high, high, medium). Trace a path for the Boomerang to hit the big bell, then the small bell twice, then the big bell again. A yellow "impact" icon over the bell indicates the Boomerang will hit it. This opens a door to the west.

Take the west door and follow it outside.

You will find five torches, with the middle one already lit.

Trace a Boomerang path into the lit torch, then all around the snow. The Boomerang will catch on fire and melt the snow it hovers over.

Melt enough snow to reveal tiles next to the four unlit torches. The dots in these tiles indicate the order in which the torches should be lit: first, second, third, and finally fourth.

Have the Boomerang light the torches in this specific order with one throw. This will open a door.

Head downstairs.