Stanislavski's Method

During conversation with NPCs you'll sometimes see lifepath-specific options (e.g. Corpo) in how to respond. Make sure to pick these when they come up. This is missable because there's only so many opportunities in a playthrough (how many depends on the lifepath and how you play; i.e. what conversations come up).

But so long as you're doing most/all of the sidequests (which you'll need to for the other achievements), and making sure to pick the lifepath option whenever it appears in conversation then it won't be difficult to unlock this. There are more than 10 opportunities - just its technically missable because there is only a finite number.