Grappling

The grappling hook can be used to swing from one part of the level to another. You will have to aim your gun at an object and hold the right mouse button. It is also a faster way of traveling and because of that, there will be a grappling hook bar right above your health bar (see second picture). When you grapple for too long, your grappling hook will break and it takes time to recover. Because of that, you should use it wisely as overusing it, might create a situation where you really need it, but can't use it because it's still recovering.

ammo goes down when grappling and gets refilled when not.