I Became an Extra in a Game I Played for 15,000 Hours

Infinite freedom, a huge story.
I tried the final achievement in a game I had played for over 15,000 hours and fully mastered, but my life got messed up.
As if being trapped inside the game was not bad enough, I became an extra with none of the main character’s advantages.
Using my expert knowledge and amazing control, I will survive extreme situations and reach the game’s ending with the hero.