Help does anyone know this manga? So the mc has survived to beat the waves of monsters sent by the gods but he’s lonely and wishes he didn’t do it alone or somethin. Anyway he goes back in time to when he’s a college student, where the first wave happens, and he saves this girl who’s his friend and I think died the first time? And then saves a group of students camping out in the school who also died the first time. And then solos some boss thing and everybody thinks he died to get them to the safe zone but he’s alive. Oh and there’s these black orb things that follow them around. They’re basically how the God’s watch them because all the waves are for their entertainment. And the gods can choose an avatar to be theirs.
Not sure, but the god's avatar and entertainment thing kinda sounds like Omniscient Reader’S Viewpoint
I think it is Return to Player, but he cleared a game, and returned with items and bonuses but reset to level one. The other scenarios you mentioned happened there.