You can get this as early as your first dock on Groundbreaker, you’ll need at least 40 points in either Lie, Intimidate or Persuade.
Make sure you grab the holographic shroud from the captain’s quarters before you leave your ship.
On the main promenade, on the left hand side, is a medical suite. (Where you first meet companion Ellie)
Past the reception desk is a ward with a few beds. At the back on a table is a Mardet ID cartridge. Pick it up then walk through the restricted door. Walk around in this room (there should be a person or two) until your shroud meter depletes. When it happens one of the people will walk up and ask you what you’re up to. Use lie, Intimidate or Persuade on them, and they’ll walk off, and your meter will be reset.
Repeat another two times for the cheevo! The shroud meter has three little boxes at the end to show you how many dialogues you’ve passed.
You MUST do this with one disguise - don’t leave the room and come back, just drain the meter and it will refill each tome you ass the dialogue. The final one requires a skill of 40 to pass.