Guns of the Patriots initially has four difficulty levels: Liquid Easy, Naked Normal, Solid Normal and
Big Boss Hard. Naked Normal is the "default" difficulty. The hardest difficulty setting, Big Boss Extreme, is
unlocked after completing the single-player game. If the player beats the game on Big Boss Difficulty under the following conditions, they receive the
Big Boss Emblem: beat the game in less than five hours, don't use stealth camouflage or special items, don't trigger any alert phases, no deaths, no kills and no continues. Obtaining the
Big Boss Emblem in this way is called a
Perfect Playthrough.