Help everyone unlock one by taking part in an online event
While some are clearly better than others, the EX3 costumes in Resident Evil 6 are pretty darn neat. If you've been playing the game lately, whatever you do, don't stop! On December 28, there's going to be an online event called Zombie Mayhem which tasks the collective player base with earning 15 million zombie kills by January 7, 2013.
The prize? A polygonal costume of your choosing. This is one prize that seems worth fighting for. Fail or succeed, either way, future EX3 costumes will be available down the road through other events. Don't everyone go picking Leon's RPD outfit at once.