These codes instantly push your Mother Base departments to Level 99, unlocking all weapon development tiers.
Users on Reddit report that if you are using the 60 FPS cheat, you must turn it off during Quick Time Events (QTEs). If enabled, the QTE bar will empty too fast to complete, making them impossible. Use 30 FPS for those sections. Top MGS Peace Walker Cheats Table ppsspp metal gear solid peace walker cheats
If you don't have a full database, you can create a custom cheat file: These codes instantly push your Mother Base departments