Use the zipline to get across | Chapter 24: Bridge Metro: LL Guide

Go ahead and find a new filter on your way. Carefully, walk around the monster and approach the handle shown in the above screenshot.

An important piece of information, here, is that you can ignore all of the monsters altogether while going down the zipline, including a demon (it is especially important if you are planning on unlocking the abovementioned achievement). The ride finishes as soon as the zipline is broken by the airborne beast (you had no influence on it whatsoever).