I Kill To Be God: Beyond Human Barrier summary:

Amid a foreign dimension invasion, all life on Earth mutated. Humans were compelled to retreat, leaving behind vast lands now known as the Wasteland, inhabited by these foreign creatures. Jiang Han, a low-talent awakener, finds himself unexpectedly bound to an MMO system. He gains XP and levels up by slaying monsters. “Congratulations, host, for killing the Lord-level monster Steel-mane boar king. Gained 58965 EXP.” “Congratulations, host, for using the talent enhancement card. The current talent level increased by one.