Crisp Climb Castle is in the second batch of unlocked islands in Bowser’s Fury, and it’s a huge structure filled with rotating platforms, as well as hidden Cat Shine Shards.
On Crisp Climb Castle, use the Propeller Box to fly up. This is pretty much mandatory to get up the level. Propeller Boxes are found all around the area, disguised as question mark blocks. You can also use a Super Bell to turn into Cat Mario, allowing you to cling to walls for an extra safety net.
Crisp Climb Castle Cat Shine Shard 1 of 5
The first Cat Shine Shard is straight ahead on the shorter tower. It’s floating in the air in the center, so use the Propeller Box to fly straight up to grab it.
Crisp Climb Castle Cat Shine Shard 2 of 5
The second Cat Shine Shard is around the corner of the taller tower. Ride the rotating panels on the very edge to ride straight to it.
Crisp Climb Castle Cat Shine Shard 3 of 5
The third Cat Shine Shard is in a hidden room that you need to fly up to.
As you scale the tower, go past the tall tower of colorful beetles and keep climbing up. You’ll see a ledge leading to (seemingly) nowhere on the left. Stand on that ledge, and propeller up to grab the third Cat Shine Shard.
Crisp Climb Castle Cat Shine Shard 4 of 5
The fourth Cat Shine Shard is visible as you climb the tower. To grab it, time your Propeller Box to activate as you jump down toward it. If you don’t mind climbing the tower again, you can also just jump and fall into it.
Crisp Climb Castle Cat Shine Shard 5 of 5
The final Cat Shine Shard is at the center of the large windmill-like structure. Again, you can use your Propeller Box to slowly float down to it.