The term "verified" in this context means: This system will make you better. It will make you faster. And most importantly, it will expose your mistakes before the real enemy can exploit them.
The most reliable way to modify your gameplay experience on PC is through the developer-included cheat menu. This method is "verified" as it is hardcoded into the game and does not require downloading potentially harmful .exe files.
: Press L1, R1, L1, R1, Circle, Circle, Circle, Circle at the main menu.
For players on legacy console hardware, verified codes also exist to unlock the cheat menu or select levels: Access Cheat Menu L1, R1, L1, R1, Circle, Circle, Circle, Circle Xbox Level Select L, R, L, R, X, White, Black, X Modern Compatibility Note