Aliens: Fireteam Elite/Ingress

Part 1
Luckily the first part does not have any real enemies, so it is good to adjust to the controls.

You will appear in the airlock open to the Katanga facility, enter onto the ship, go forward, then go down the large corridor to the left until you encounter the side door. Enter into the next room and afterwards, you will enter a type of control room. Go to the opposite end of the room and interact with the console on the left near the window. This will enable the door on the left to unlock.

Part 2
Continue through to the door on the left and along another corridor. It will open up to another room leading to a large looking room, where the commander will notify you that there is acid damage present. There are also some aliens seen on the left corridor, but they will run away in this time.