There’s a ton of medals for you to earn on your way to becoming a champion in the Crucible. Every medal that was available in the Beta is listed below, though keep in mind, there may be more once the game is released, and some of these could be altered. All of these can be viewed on your Bungie.net profile.
Click the images below to enlarge them.
Medals by Game
Medals by Wins
Special Kill Medals