Now that the Goliath tanks are disabled, escape from the Red Legion base before heavy reinforcements arrive.
- Turn to the left, and head through the hallway that opens.
- Toward the end of it you will encounter a number of Legionaries and Psions.
- Turn to the left and you will see more Cabal below you.
- Use the explosive barrels to get some quick kills if the grouping is right.
- Continue through the hallway, keeping to the left as you go downward and forward.
- There will be more Cabal trying to stop you.
- Keep with the walkway and it turns to the right and into the next group of Cabal with a Centurion.
- Just make your way back out to the Sunken Isles to complete the mission.