Killing Battlefield: I Can Kill Unlimited Monsters and Upgrade

After the catastrophe, monsters invaded, alien beasts raged, and humans struggled to survive. But Chu Feng's parents disappeared on the battlefield ten years ago, their life or death uncertain, and they only left him a mysterious fire badge. In order to investigate the truth behind his parents' disappearance, Chu Feng resolutely joined the army, but was rejected because he had not awakened his powers. Just when Chu Feng was disheartened, he successfully robbed the traveler's [Monster Killing Upgrade] system with the help of this Fire Badge! As long as you kill monsters, you can become stronger! "Kill the mutant demon wolf king and obtain the wolf king's bloodline!" "Kill the abyss succubus and get a succubus slave!" "Kill the Demonic Dragon King of Hell and obtain an immortal body!" "Kill the evil-eyed tyrant Lord and obtain the artifact Lord of Light!" ………… Chu Feng: "As long as my level is high enough, even gods will kill you!"