I'm Invincible. Can You Upgrade Faster?

(The game world of this book + no heroine + cool text + unlimited skill points + grand world view) Zhang San, a retired soldier who was injured when he first entered the game, got an exclusive skill for salty players because of his excessive moves! And became a full-time shooter in the game! While others were still serious about upgrading, he had already reached the point of becoming a god! "Big Brother Outlaw Gangster is awesome!" "Big Brother, lead me!" "What, just a shooter, look at me... Why didn't I break through the defense?" "Oh my God! You actually killed me with just one basic attack?" When the abyss at the end of the game opened and the ancient gods came to the world, Zhang San looked at the skills on the screen, thinking about which skill would have the best B-level, or how many divine arrows would kill them in seconds?