Yeah, as said, gotta be more than 20 Stranger missions. I'm about 4 hrs in, 5 story missions or so and have done 8 stranger missions or so. I think there's like 60.
370 games played
229 completed games to 100%
89.07% completion percentage
Last Achievement : Split-Decision (The Walking Dead Season 2 for 25g)
Last 100% : The Walking Dead Season 2