When you have control of your primary team, head down the ramp nearby and intothe collector base, follow the winding pathway around until it empties out intoa large open room. Kill the three Collector Drones in the room to the righthere and the reinforcements that arrive soon after. Move to the other end ofthe room and you will receive a communication from your sneak–in team membertelling you there is an obstruction in the vent. Move into the room oppositethe entrance and use the green valve (1/8) here to assist.
Move to the right of the valve and look down the ramp to the left. There arethree Collector Drones here and one of these will become a Harbinger. Once theyare defeated, move down and vault the cover here. Hit the green valve (2/8) onthe left and as you do, more collectors will fly onto the platform from theright and surprisingly enough, one of these guys will become a Harbiger. Oncethey have been capped, continue along the pathway here hit the green valve(3/8) here and vault up into the raised area at the end.
Activate green valve (4/8) in this room. Continue to the right and take coveras you turn into another open area. Below to the right a group of 6-7 Collectordrones will be waiting for you and one will become a Harbinger. When you havedropped them, look across the room and slightly to the left to see the nextvalve. Once you know where you are going, drop down into the room below and usethe various platforms to vault across to the other side of the area. About athird of the way across another group of two drones and a Harbinger will land.Dispatch them quickly before running over and hitting the green valeve (5/8).
Continue into the hallway to the right and disable the next green valve (6/8)here. Follow the passage around the corner and eliminate the three drones here.Take cover behind the raised area to the right at the end of the hall and youshould see the next valve in front of you at the near end of a bridge leadingto a large platform. Stay in cover here and defeat the Collector Assassin andany other drones in the immediate area. When they are dead, vault up to theplatform and quickly run up to activate the green valve (7/8) and take cover.
On the platform across the bridge 6-7 drones and a Harbinger will fly in tokeep you at bay. Eiminate them and cruise around to the left to hit the finalgreen valve (8/8) to watch a short story clip.
During the scene and the subsequent conversation, you will need to set upanother team and select another leader for a secondary team. You can also sendone of the guys to escort your newly rescued crewmembers back to the Normandy.
