This is episode 42 of 57 of Apocalypse Chosen Savior. Play it below, then continue straight into the next episode — the whole season is free and needs no account.
The closing stretch of the season, where the arc pays off.
A zombie apocalypse erupts. Ethan is chosen by a salvation system as humanity's savior. Surrounded by zombies, he injects an evolution serum and gains superhuman abilities. He searches for lost classmates, protects loved ones, punishes evildoers, and guards humanity's fading light.