Mask Shard

Buy it from Pebb for 300 Rosaries.

Go left into The Marrow, over to the far left of this screen and climb up, then head along the upper path to reach this area.

It’s easiest reach this using Cling Grip to wall jump up to the upper path, but it is possible to kite a flying enemy from below up to the path, and pogo jump off them instead. This means you can reach the shard early.

Complete the combat and platforming trial inside the skull, then ride the Wind Jet to the top of the shaft.

After obtaining the Drifter’s Cloak, use the wind jet in the southeast corner of the large room to the right, then explode the rocks to create yet more wind jets, allowing you to reach this room.

Inside, use the explosive rocks and wind jets to open a hole in the floor. The Mask Shard is inside.

Found at the end of the long spike corridor.

This is most easily reached with the Silk Soar Ancestral Art found in The Abyss in Act 3, but you can reach it before then.

Stand on the raised rocky platform in the sandy passage below, then sprint jump, clawline, and double jump (in that order) to reach the first floating platform above. Repeat the manoeuvre to reach the next platform, and the room above that holds the shard.

Credit to GG user Pineapple for pointing out this method to us.

Purchase from Jubilana for 750 Rosaries.

Requires pathing through the Cog Core area and to the left after the fight room to reach this. Defeat the Cogwork Dancers to access it.

Raise the block in the room below, then use it to reach this ledge.

Once you have the Faydown Cloak, return here and use a double jump combined with wall jumping to reach the Mask Shard.

Found at the end of the long Slubberlug gauntlet on the east side of Bilewater.

Found at the very top of Brightvein, requires Silk Soar to reach.

Located on the upper left ledge.

Found at the end of the eastern passage of Wisp Thicket.

Win the third Fastest in Pharloom race and complete the Wish.

Use the spikes on the track to bounce your way up this very tricky platforming challenge area. The shard is at the top.

Located behind the breakable wall to the right of the shallow water.

Reward for completing the Dark Hearts Wish.

Reward for completing The Hidden Hunter Wish.

Reward for completing the Savage Beastfly (Wish).