1. The focus is on telling a story, with no lengthy fights.
2. No torturing the protagonist, and no killing off his parents or wife.
3. The protagonist fights in the early stages and does research in the later stages, excelling at both brains and brawn.
4. It starts with a zombie apocalypse, then shifts to sci-fi and cosmic conflict.
5. There is only one female lead.
A zombie horde surges into the world as the apocalypse begins. The protagonist struggles to survive amid the chaos. Early on, through sheer determination, he keeps fighting monsters and leveling up, honing himself through bloody slaughter.
Later, as his adventures grow more perilous, the world's veil of mystery is gradually lifted...