Deliver Us The Moon

Later on in the first mission you'll have to move a set of stairs to get through a door. Once you go through that door you'll head upstairs into what looks like a canteen.

The audio log can be found in the door way at the other end opposite from where you entered , its highly noticeable as a glowing , flickering orange audio wave looking image. floating right in the middle of the door. collect this for the achievement

Here is my 100% Achievement guide for Deliver Us The Moon!

In Chapter 1, there will be a set of stairs you need to move to get through that door.
Turn on your torch, go left and up and you will reach a canteen looking area.

At the opposite end of where you enter on the right hand side is another door to go through and the first of many audio logs will be in plain view, basically unmissable!

Go to 10:50 in the video to see where it is.

Hope This Helps!