An Npc's Path to Upgrade

My name is Yin Hao, and I am playing Quantum, one of the most popular games in the world. This game is said to have the highest degree of freedom in the world. Each player has a different main story, attracting billions of players around the world. Others create accounts as players, but I created an NPC account. This identity is too buggy. I can level up by killing monsters, gain experience by killing players, and can go to maps that others cannot... This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.