Snowpeak Ruins

Early Heart Piece 1

Originally discovered by Paraxade

Target a keese with the gale boomerang to bring it to Link. Turn into a wolf and use a Dark Energy Attack to target the keese. Wait until it returns to its platform and release the attack to jump up to the platform. Then use a Long Jump Attack to reach the Heart Piece. You want to be standing at the top of the stairs and slightly away from the wall as shown in the video

Early Heart Piece 2

Originally discovered by ZFG

Throw the boomerang immediately after opening the door, and LJA as it crosses the void while returning. To escape, clawshot through the ceiling.

Original demo video by Trez here

Consistent Double LJA to Small Key

Originally discovered by Dragonbane

After entering the room on the first floor, roll to the right side in front of the Ice wall.
Target the window across the room, then the top of the pillar slightly to the right and then do the final target far to the right (over the fence).
Jump as soon as the boomerang goes out of bounds both times.

Cannon Room Ice Wall Clip

DISCOVERED BY MRMRMEN, IMPROVED BY EKKE

Get Past the Ice Wall

The floor clip done on Gamecube is patched in TPHD, however if you jump down onto the roof of the Freezard cage you can slip down past the ice wall. Roll to the door and put clawshot away while waiting, as for some reason this door takes some time to let you open it.

Original demo video by Trez here

Ladder Freezard Cancel

Discovered by Chrisisawesome & Hylian Freddy

The freezard guarding the ladder to the boss key room is meant to blow an unending ice attack whenever Link is high enough on the ladder, preventing him from reaching the top. However, dropping off the ladder frame perfectly will cause the freezard to begin a normal-length attack rather than the unending one. With TPHD's increased climbing speed, you can make it all the way up.

You'll know if you got the drop frame correct if you hear the freezard creak as you fall. If you're too early, there won't be any sound. If you're too late, the spewing will start immediately and be continuous.

The timing to drop is different the first time you climb the ladder than when retrying after failing.

Almost using the sound of Link climbing the ladder as a metronome, on the first attempt press A to drop when the 9th beat would happen (as shown in the first clip). If you fail, when you retry go one beat earlier (as shown in the second clip).

Make sure to very slightly delay climbing back up. If you climb at full speed all the way up immediately, you'll reach the top too quickly and get hit by the end of the freezard's attack.

Freezard Skip (early Ball and Chain)

Corner Bonk Method

Bonk into the corner with a B attack to get frozen midair. Turn the camera, then B attack at a slight angle between the Freezard and the door to clip through while invincible. Transform back to human and target walk backwards until you can open the door. With this method you don't need to mash to break out of the ice.

Safe/Backup Method

As Wolf Link, get into the corner to the left of the freezard and wait for it to be fully turned. Now dash around it and run into it right next to the doorframe.
Mash to break out of the ice and B attack to jump between the door and freezard while still being invincible.
Backwalk after transforming til you can open the door.

Faster Freeze Method

Simply run into the wall on the right of the Freezard and hit him there.
Break out of the ice and B-Attack between the Freezard and the doorframe.
Backwalk after transforming till you can open the door.

Bomb Boost to Second Floor

Discovered by Jiano, SexyZora19

Aim towards the ice wall and pull out a bomb and put on the Iron Boots for timing purposes, wait until the 4th flash starts then take off the Iron Boots and hold forward. The bomb boost should cause you to land on top of the wall. Once you reach the upper ledge, aim the Gale Boomerang at the cannon and use a Long Jump to get to the opposite side of the courtyard.

Get to Second Floor with Ball and Chain

Discovered by DF6780

With precise positioning, you can break some ice from the first floor and clawshot up to get to the second floor.

LJAs to Boss Key Room

After performing the bomb boost in All Dungeons you will want to head over to the boss key. To start this you can use a LJA on the very edge to get over to the middle platform by targeting above the door frame.

From the Middle Platform it is possible to LJA onto a broken pillar and then jump over to the platform with the door to the boss key room, this skips having to bring a cannonball and destroying the Freezard. It is possible to get knocked down by the Freezard at the end when climbing up, if you think this will happen just wait until his cycle ends then climb up. (If you grab two-handed you can climb up early)

Boss Key Room with Bomb Arrows

Discovered by DF6780

Using 4 bombarrows the room can be cleared quicker than with ball and chain.

Original demo video by DF on Gamecube here

Faster Heart Container

Discovered by SVA161620

You can collect the heart container with the ball & chain while it is floating down. After doing the gainer (1 frame backflip during CS), just hold left and mash ball & chain.