Here is the full list of all 38 Loop8: Summer of Gods achievements.
All achievements unlocked.
Beat the game by saving the world and Konoha.
Beat the game by saving Konoha.
Beat the game by saving the world.
Unlocked every ending.
Defeated Kukunochi.
Defeated Shinatsuhiko.
Defeated Wadatsumi.
Defeated Kagutsuchi.
Defeated Izanami.
Defeated Iwanaga Hime.
Beat a boss as a duo.
Beat a boss solo.
Witnessed the end of the world.
Looped for the first time.
Looped 8 times.
Reached max hatred for 1 character.
Reached max friendship for 1 character.
Reached max friendship for 6 characters.
Reached max friendship for all characters.
Reached max affection for 1 character.
Reached max affection for 6 characters.
Reached max affection for all characters.
Received your first blessing.
Received 100 blessings.
Received 300 blessings.
Received all 650 blessings.
Beat the game with Beni's ending.
Beat the game with Hori's ending.
Beat the game with Saru's ending.
Beat the game with Machina's ending.
Beat the game with Micchi's ending.
Beat the game with Takako's ending.
Beat the game with Max's ending.
Beat the game with Ichika's ending.
Beat the game with Kuni's ending.
Beat the game with Nanachi's ending.
Beat the game with Terasu's ending.