The day that dungeon appear in earth and I been reincarnated

Once upon a time there are a 5 hero that save the humankind from monster break out that came out from no where.there's one of the strongest hero between the 5 hero it's is called "ISAAC" but in the end he been backstab by his own trusted friend it was the hero because he has been badly injured by defending all the monster from attacking the city and the hero that backstab his own friend killed himself because been curse by god that bless isaac as his apostle.But lastly I the hero ISAAC reincarnated as a teenage boy it about 16 years old and it didn't have a mana nor chi in his body.but this is the opportunity to make my cultivate back to origin and I going to become stronger than I before.In the day of my reincarnated it was suddenly break out and monster came out from the portal that is called dungeon.And the hunter appear