This achievement is rather simple.
Edit (4/2/20): Turns out you don't need a full team to get this done. Can be done solo with any of the listed characters
1: Get a team of 3 together: team must contain any combination of (with no duplicates) COG solider, Lizzie Carmine, Clayton Carmine, Baird, or Cole
2: Beat any escape map, beginner difficulty will be the fastest.
If your team is set up right you will get the achievement after the escape match is over