(adsbygoogle = window.adsbygoogle || []).push({}); Ok, first of all there are secret challenges that can not be obtained by the barracks. One very popular one is STD. But there are many rumors of others that can be obtained.

1. Never Forget. Getting damaged by somebody, not killed than stabbing them in the back while hurt.
[ame="https://www.youtube.com/watch?v=CkI5eCZTqOU"]YouTube- Modern Warfare 2 - 'Never Forget' Challenge - HD[/ame]

2. Renaissance Man. Kill 3 different people with 3 different weapons in one life.
go to minute marker 2:24
[ame="https://www.youtube.com/watch?v=VJCk4HxKQCc"]YouTube- Modern Warfare 2: Skidrow - Team Deathmatch[/ame]

3. Infected. Get knifed by someone wearing the 'Infected' title. 3rd most common hidden challenge.

4. Bigger Bang. Take Revenge on someone who has just killed you by killing them by blowing them up with their own Claymore.

5. Radiation Sickness. Get Nuked.
Most common hidden challenge.

6. Living Dead. Survive a Final Stand Bleedout and get back up.

7. High Knife. Throw a knife as high as possible and get a kill.

8. 6fears7. use 7, 8, 9 killstreak rewards

9. Click Click Boom. Killing someone with C4 while you're in Last Stand

10. Sidekick. 3 kill in 1 life with a secondary.

11. STD. Knifing someone with the STD title on their callsign.
Videos above they are not mine.

12. The Edge I, II, III: Get the last kill in a match 1,15, and 30 times.

13. Loner: You have to get a 10 killstreak with no Killstreaks equipped.

If you know any more please either PM me or comment it.

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Edit your post with a pic or a video of it and tell me your your Gamertag and play online with it on

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Thanks dude i forgot that they were hidden ones.

Ok whats your gt il show you

tenzerofour
for ps3

Have done the highest knife cause its fake or at least the vids for it

Thanks for posting them. Thats cool how they did hidden challenges.

nice find.

For the loner challenge, you get the title "Behind Enemy Lines", and a Mario-Like emblem.

Some videos have such a close resemblance to the real challenge looks sometimes its hard to tell.

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No problem and yeah I didn't expect them till I got one and it wasn't in the barracks and I thought I had a bad copy of the game.

---------- Post added at 10:01 PM ---------- Previous post was at 10:01 PM ----------



Found some new most of them.

---------- Post added at 10:03 PM ---------- Previous post was at 10:01 PM ----------



Yeah the Behind enemy lines has the snake on it and the Mario-like emblem is like a pixleated 1990 Mario guy from the first Mario game.

Quad posting fail ^^^^