So this is basically like PPAD's Margarita Quest, but with less risk of alcoholism. Do some stuff and you can get this pin:
Complete five tasks listed in the grid below. The tasks must be in a straight line (horizontal, vertical or diagonal). Take pictures of yourself completing tasks and tweet each to @thx42 with the grid coordinates and the hashtag #paxselfiehunt. When you complete a line of five tasks, find me (thx42) to collect your prize (limit one per person, while supplies last). I can usually be found at pin panels, community pin trading events, and near Merch Lite.
2015 PAX Prime Omeganaut (I will forever hate Katamari)
Someone that broadcasts primarily using the Mixer platform. Mixer is a competitor to Twitch, owned by Microsoft. Best bets for this would probably be near the Xbox booth, the streaming pods, or the "Building Your Stream Community" panel at 12 Saturday in the Dragonfly theatre.
I think most of it is in Boston Harbor