The Gardens Spire

Head through the Scablands, clearing out Cabal enemies before reaching the entrance of Firebase Rubicon. Focus on defeating Centurions as they appear.

Continue through the area to reach the Rubicon Wastes. Beware of a Colossus firing a Slug Thrower from the top of the opening at the back end.

After defeating the enemies, move into a garage and pick up an Interceptor.

Use the Interceptor to break through Centurions and another Colossus to reach the Iron Line.

At the entrance to the Iron Line, you will encounter an ambush. Use the Interceptor to attack enemies, but be prepared to bail out if necessary.

The second wave includes a Centurion, and the third wave features a Colossus coming from the right.

After defeating the waves, use your Ghost to open the gate and proceed into the keep on foot, as you cannot take the Interceptor further.

Inside, you will face a Major Phalanx and two normal Phalanxes. Aim for their arms and defeat them quickly.

Make your way up into Legions Keep once the path is secure.

In Legions Keep, deal with Cabal from multiple areas. Take your time and clear one side at a time. The Colossus in the back can be dealt with using a Heavy Weapon and Super Ability.

Ahead, you will encounter more Cabal led by a Centurion.

Deploy your Ghost to wake the eye, then take cover (press the cover button to crouch behind walls or objects). You can duck under the spire to avoid damage from Primus Shaaull, an Ultra Centurion.

Defeat any additional enemies (adds) that appear so you can focus on avoiding Primus Shaaull. More Cabal will join the fight at 70% and 35% health. Save your Super Abilities and Heavy Weapons for the boss encounter.

After defeating Primus Shaaull, return to your Vanguard Mentor.