Completing all the missions in Grand Theft Auto V (GTA V) as part of the main storyline and reaching 100% game completion is indeed a major feat. Here are some useful tips to help you: 1. **Know the Basics:** The first step toward reaching 100% completion in GTA V is to play through the main story missions. These missions will give you a feel for the game, build your skills, and help you to understand the expansive GTA universe. 2. **Understand Mission Structure:** GTA V has a mission structure that requires you not only to complete the main missions but also other tasks, including random encounters, hobbies, and pastimes. The tasks are split into four types: Main Missions, Strangers, and Freaks, Random Events, and Misc. 3. **Complete Side Missions:** They are known as "Strangers and Freaks," and they often provide more entertaining gameplay than the more serious story missions. They'll help you build your character's skills, and some will even affect the outcome of the game's story. 4. **Engage in Activities:** Activities like tennis, darts, golf, or yoga are essential to reach 100% completion. They may seem trivial, but they are counted in the game as individual missions. 5. **Be Curious:** Random events are temporary events that, when accessed, are usually played as a side mission of sorts. These events typically require you to make a moral choice, such as returning stolen money or killing a thief. 6. **Explore**: Remember to explore Los Santos and beyond. There are places to visit, sights to see, and collectibles to find, such as Spaceship parts and Letter Scraps. 7. **Watch Your Progress:** You can check your progress in GTA V by pressing "Start" then navigating to "Game", then "Stats" and finally "100% Checklist". Here you can see exactly what you still need to do to reach that elusive 100%. 8. **Use Guides:** If you're still having trouble, there are plenty of online guides and tutorials which can help you understand the game mechanics, mission structures, and tips for completion. Remember: reaching 100% completion in GTA V is a marathon, not a sprint. Enjoy the journey!