Salary Man Zombie Survival

World war 3 started China attack Iceland using thermo nuclear weapon unfortunately the ancient ice caps melted. once again the ancient zombie virus that destroyed the advanced civilization 14.000 years ago infected more than 80% of today's world population in just a week. Ryan an obese salary man in the Philippines trapped in the store but fortunately he got a system, surviving the apocalypse by level up and missions of killing the mutated zombies will he survive in the cruel and ruthless world of zombie apocalypse,