Point the installer to your main Ninja Gaiden Sigma installation folder.
Installing the Ninja.Gaiden.Sigma.Update.v1.0.0.2-CODEX.rar patch is a straightforward process. Here's a step-by-step guide: Ninja.Gaiden.Sigma.Update.v1.0.0.2-CODEX.rar
Addressed random crashes reported during specific intense combat scenes or cutscenes. Point the installer to your main Ninja Gaiden