The CODEX release also inherited all post-launch patches and PC-specific optimizations from Koei Tecmo:
The "Complete Edition" includes the full base game and the content: Nioh Complete Edition-CODEX
Gameplay and Mechanics Nioh’s core is a demanding, skill-based combat system that rewards patience, timing, and mastery. Players embody William Adams, a Western samurai in a fantastical Sengoku Japan, fighting humans and yokai. The stance system (high, mid, low) adds depth by altering attack speed, stamina cost, and reach, encouraging situational adaptation. Ki (stamina) management and Ki pulse restore mechanics create a tempo between aggression and defense reminiscent of Sekiro and Dark Souls but with distinct identity through faster, combo-oriented play and extensive weapon variety. The CODEX release also inherited all post-launch patches
While the CODEX release made the game widely accessible, Nioh: Complete Edition was famously criticized upon its PC release for being a "lazy port": Ki (stamina) management and Ki pulse restore mechanics