After a long cutscene, follow the marker. Run through the field with electrical discharges. Immediately at the exit of the cave on the left is a fuel cell. If you wish, you can do an extra task and shoot at it.

Climb up the ledge and watch the cut-scene. Get closer to the aliens and then kill them.

The cutscene will end. The first additional task with the marker, the orange outline, will appear. You need to apply the scanner to the corpse of the alien and then empty the box nearby.

Follow the marker, kill three more enemies and examine Kirkland. Pick up the M-8 Avenger assault rifle. Use the wheel to change weapons.

At the fork go left, kill the four-legged monster and get to the next part of the shuttle. Search the container and deal with the enemies. Follow the marker and look into the unknown ruins on the left.

They will turn out to be an alien complex. After the second marker on the right, there will be a closed door. Go to the far left and find an alien device on top. This is the generator. Turn on the light and go back to the door. Go through and kill the robot. Examine everything you see with the scanner. There will be enemies waiting for you at the exit.

Next you will get to the source of the flares. Just destroy all the enemies. The second shuttle will also be here. If you wish, pick up a new Charger gun from the container by the shuttle. Repel one more enemy attack and watch the cut-scene.

Follow the marker to find the Pioneer. Avoid the green toxic puddles, move along the walls to hide from lightning strikes. Climb upstairs and talk to Ryder Sr.

Move after him, killing enemies. Along the way you will find another partner killed (additional target). At the top, you’ll have to wait while Ryder Sr. breaks down the door to the tower. Give orders to your companions to protect the flanks. You can send them together, or you can send them separately. Hold out until Ryder is ready to move on. To complete the additional quest, you need to send Cora and Liam separately to the two flanks (marked with markers).

In the upper right corner a scale will gradually fill up. It indicates how much time you have left to fight off the enemies. Then go to the Ryder, then to the door.