Blazkowiczs visit on the moon is not without incident, and when he hijacks a shuttle back to Earth the London Nautica Command find out about him and they shoot his shuttle when it enters the atmosphere.
Because the whole facility is on full alert you wont have the chance to stealth kill a commander.
If you want to get all the collectibles use the text in the following Wolfenstein: The New Order guide in correlation with the map below.
Chapter 14 Mission Details
Earth. Looked so peaceful from space. Back on the ground, Im reminded how the Nazis have fucked it up. So, gotta keep moving.
Almost at the finish line now. Just get back down on the ground and find a way back to Berlin. Caroline will know what to do next.
Enigma Codes: 5
Wolfenstein: The New Order Chapter 14 Collectibles Guide
Enigma Code #1 (Piece 5:2)
Your shuttle crashes on the edge of a bridge. When the enemies shoot it you have to jump on a cable that will swing you inside the building and into a soldiers face.
Look to your right to see the Enigma Code on the boxes that are on the bench.
Gold #1 (Gold Bangles)
Head outside the room and onto the scaffolding. Shoot the chain with the LKW and go down until you reach a plank that has another chain.
Before shooting the chain jump on the ledge of the building to get the Gold collectible.
Enigma Code #2 (Piece 5:3)
Next, shoot the chain and get inside the building. Follow the corridor and as soon as you reach the enemies head in the room to your right.
The second Enigma Code in Chapter 14 is on the big red table.
Gold #2 (Gold Football)
In the same room there are a few paintings on the walls. Interact with the one that is standing straight (the one that doesnt have a picture) to reveal a secret room.
The Gold piece is inside, on top of the shelf.
Eventually you will reach a room with a missing façade where you are attacked by a helicopter.
As you enter this room grab the Map that is on the counter on the right side.
Enigma Code #3 (Piece 5:4)
Head across the room around the hole in the floor to find the third Enigma Code hidden in the rubble.
Enigma Code #4 (Piece 5:5)
After you destroy the helicopter you need to jump through the hole to reach the lower floor. Get rid of the enemies and then head to their position on the other side of the floor.
You can find the Enigma Code next to the blue tarpaulin.
Enigma Code #5 (Piece 5:6)
Once again, use the hole in the floor and go to the other side of the room where the enemies shoot at you.
The last Enigma Code is in the filing cabinets next to the wall with monitors.