Updated 06-01-2016 05:08 AM
This achievement requires you to participate in all GTA Online activities at least once. It sounds like a lot but it really isn't that difficult to achieve.
Keep in mind you don't have to actually win, you just have participate without quitting. Also, some activities won't be available until you reach level 10, so you'll have to wait until then before you can unlock the achievement.
ProTip: You can see which activities you've completed under the pause menu (Start > Stats > Unlocks > Progress).
Here are the activities you will need to complete for the achievement to unlock: