Anyone looking to score 100 percent completion in Grand Theft Auto 5 must complete a variety of different missions via the game's story or through different characters. However, 14 certain missions needed to achieve 100 percent completion can only be obtained through random events in the game. Here's a quick guide for finding and completing these events.
The good news is that unlike certain Stranger and Freaks or Hobby missions, users do not have to complete specific random events to get to 100 percent completion, so any 14 missions will do to get the job done.
Three easy random events to complete are the ATM robberies found in Little Seoul, Pacific Bluffs and Vespucci Canals. In each of these three locations a woman will be robbed and have her purse stolen. The easiest way to take out the robber is to run him down in a car, then grab the purse. Returning the purse to the victim lands the player $50.
One random event that also doubles as an easter egg is the "No Country for Old Men" random event. If players go to the desert west of Mt. Chiliad, they will encounter several dead and dying drug dealers. Players must find a briefcase with $25,000 in it, then flee the area. Soon afterward, pickup trucks will chase after the player and start a shootout, and killing these thugs will complete the event.
The most populous random event is robbing security vans found around Los Santos. Ten of these vans will appear in Los Santos at certain locations, and players must kill the security guards in them (giving them a two star wanted level in the process) before opening up the vans with various amounts of money in them. Grabbing the money and avoiding the cops will complete these missions.
An easy and fun random event is called The Superstar Actress. Go to the Chinese Theater in Vinewood and in a valley an actress will need the player's help to avoid the paparazzi. By losing the cameramen (without using weapons) and getting the actress to her home, users will receive $750 and complete the event.
Finally, one event called What's in Your Wallet can be found in Grapeseed. A man is robbed of his wallet by a member of the Lost motorcycle gang, and if players track him down in his van and kill the men inside, they can return the wallet, get $25 for their efforts, and complete the event.