Fit in Six
12 Achievements
PS3
Jack of all Trades
Complete one Workout from each Class (except DLC Classes)
9.2%
How to unlock the Jack of all Trades achievement in Fit in Six - Definitive Guide
Go one tab over in workouts, and it should say classes. Do the upper left one in each class type. Those are the shortest of the groups. After you do one of each class type, you get this trophy.