If you are looking to bypass the grind, you can unlock all modes (Master Ninja difficulty, Chapter Challenge) and weapons by using a on your system save file:
The file refers to a pirated "scene release" of NINJA GAIDEN Σ2 for PC , which was part of the NINJA GAIDEN: Master Collection released in June 2021. Key Release Details Ninja.Gaiden.Sigma.2-CODEX.rar
: CODEX (the release is an unofficial bypass of the game's protection). File Size : Approximately 4.5 GB . Platform : PC (Steam version port). If you are looking to bypass the grind,
: You can also download pre-made unlocker files or tools from community forums. Ninja.Gaiden.Sigma.2-CODEX.rar
: Early user reports indicated the PC port was limited in resolution options and lacked advanced graphics settings common to modern PC titles.