(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.

<====== Rep it. Its good for you.

these have been out for awhile man

Yep, its a fake challenge.

For 6 fears 7, do you just have to have them equipped, or use all of them?

you have to call them in

Thank you.

I've gotten both the Never Forget and Renaissance Man just recently!!! Before I even knew about this post haha

Haha well now you know about the others.

Found a few more you might wana add.

The Edge I, II, III: Get the last kill in a match 1,15, and 30 times. Pretty easy to get, but they don't award much xp.

Loner: You have to get a 10 killstreak with no Killstreaks equipped. You get the behind enemy lines title and the captain price/mario version emblem.

OMD i got the 10th spinning skull legit iv done every challenge + these secret challenges i got it!!