
The Cling Grip skill in Hollow Knight Silksong is an advanced ability to unlock that allows you to Wall Jump, and it makes up for the absence of the Mantis Claw from the first game.
Obtaining this skill isn't going to be easy, and there are plenty of steps to complete. You'll have to upgrade your cloak to float mid-air and ride the updraft, which lets you enter Greymoor. Completing the Lost Flea quest will make it easier for you to reach Bellhart (thanks to the Fleamaster), and from there, we approach Shellwood to find our pursuit of the Cling Grip.