The invadee is AFK. What do I do?
One thing to consider when playing competitively online is that other players might have actual lives of their own. This means that a player may step away from his or her video game console in order to attend to a real life infant, spouse, or smoking kitchen appliance. This, in turn, may result in you invading and encountering an AFK character in game. When this happens, don't panic. There are steps you can take to ensure you have lots and lots of fun.
Sure, killing the player outright will get you immediate rewards from your respective multiplayer covenant, but meeting an AFK player is a rare opportunity. After waiting a minute or two for them to return (giving them a chance to engage in a respectable duel), I recommend using a low-damage punch to push them off a cliff or into a nearby trap. If you want to be really cruel, load up on armor-breaking Corrosive Urns before you do any PvPing, and toss those at any AFK player until they wake up. There's no glory in defeating an opponent with broken armor, but, by doing so, you're providing a community service by helping that AFK player realize that they should not go AFK ever again.