Not every Pathfinder Roleplaying Game character is built to take challenges on using direct assaults - some prefer subtler methods that focus on stealth, misdirection, and covert maneuvers. The Genius Guide to Feats of Subterfuge contains a collection of feats that provide new alternatives to characters who use duplicity and deception to make their ways through the world, including exactly zero feats that add a +2 bonus to a pair of skills (so we can focus on other interesting options).
Subterfuge can be defined as a kind of pretext (misdirection or misrepresentation about the true nature of an act or item), or any deceptive or clever trick design to evade normal perception or consequence. That's a fairly broad range of activities, and includes everything from hiding (which is essentially a deception regarding your location or presence) to fooling foes about your identity, combat ability, intentions, or goals. While that's a broad theme, we did our best to create a range of feats all designed to aid in trickery and misinformation while working with the framework of the existing rules of the Pathfinder Roleplaying Game.