“Seek out the Gate Tevis used to escape the Vex.”
From the entrance of the Endless Steps, look around. You will see a lot of Goblins and Hobgoblins with a few Harpies defending it. You will need to either cut through them or sneak past them to reach the gate at the top of the Steps.
There is a lot of cover scattered throughout the area. This makes charging the Gate very feasible.
If you prefer to fight at range, you can get a lot of your targets from the entrance of the Endless Steps. This provides an excellent perch for sniping almost all of the targets in the area.
For those who like to sneak, just use the cover that is available. Some fighting is likely inevitable.
Make your way to the top of the stairs and approach the gate. This begins the next segment.