The Grapple Gloves themselves appear in purple boxes with a grapple hook icon on the side. Each box will contain one glove. Point at the object you want to grapple onto and then press and hold the ...

With the vent now open, double-tap X once more to grapple inside and continue your journey! Once the Machine is knocked down, approach it, and when you're in range, an upside-down triangle icon ...

The Destiny games have always put a major premium on traversal and mobility, especially for a first-person shooter, but the inclusion of a grapple looks set to change the feel of the entire game.