Attain a gold medal in all applicable hobbies and pastimes.
In GTA V, there are over 60 hobbies and pastimes available around San Andreas. Some of these include Taxi Missions, Races, Parachuting, Triathlons, Sports and more.
For this achievement, you only have to worry about obtaining ONE Gold Medal in the following activities:
- Flight School
- Off-Road Race
- Sea Race
- Street Race
- Shooting Range
Franklin's very first Strangers & Freaks Mission, "Shift Work," will count as a Street Race for this achievement even if you did not get a Gold Medal on it. For the Triathlons, Sea Races and Off-Road Races, you only need to get 1st place to obtain a Gold Medal. For the Flight School and Shooting Range, you only have to worry about getting a Gold Medal in one of the many challenges available. This achievement can be done with any character, so don't worry about keeping track of who does what!
A huge thanks to Callum x360a for confirmation on this achievement.