: This suggests that the game has been updated to version 1.21.06. This could include patches for bugs, balance changes, new features, or DLC (Downloadable Content) that has been integrated into the game.
: This is likely the group that cracked or released the game. CODEX is a well-known group in the scene of video game cracking, famous for cracking games that are protected by Denuvo, a digital rights management (DRM) software. Nioh.Complete.Edition.Update.v1.21.06-CODEX.rar
Respect to HOODLUM, PLAZA, CPY, and all active scene groups. : This suggests that the game has been updated to version 1