Make your way to the gateway.
- You will start just inside the Watchtower.
- Start by running up the stairs in front of you, with the aid of Spider's Associate.
- In the first hallway, you will see a large Taken Blight and a number of Taken Psions.
- Go to the end of the hallway and continue upwards the next set of stairs.
- In the next hallway you will encounter a pair of Taken Goblins.
- Continue forward from there into the large chamber just through the double doors.
- This will lead to a large conflict with the Taken.