11/12/10 UPDATE: Descriptions added for every perk, including the abilities unlocked for Pro perks.
11/9/10 UPDATE: Now that "Call of Duty: Black Ops" has been released, we'll be steadily updating this feature with all the information you could ever want about multiplayer unlocks, from level requirements to credit costs. Keep checking back!
Original Story: Earlier this week, Activision held the very first hands-on event for "Call of Duty: Black Ops" multiplayer. We already gave you some impressions from the game, including a rundown of all the new features, in our "Call of Duty: Black Ops" multiplayer preview, but there's still a lot more to share. Specifically, we managed to take down the massive list of every single unlockable that Treyarch showed at the multiplayer event. Every gun, every perk, every killstreak. Hell, we even took down all the custom red dot scope designs. Yes, we're that crazy. So here we go: