Halo 3 Achievement Help?

[Chris K]

I recently played Halo 3 on Xbox Live matchmaking and killed the required 5 enemies with a needler. However, I did not get the achievement.

I killed a team member by accident so would that bug the achievement from working? The stats said I killed 7 people with the needler, and one was the team mate.

Any ideas?

 

[darkjusticeknight]

plus u have to do it on a ranked free for all anyways

 

[PATRICK L]

Do it on campaign mode. Real easy achievement

 

[Super-Robot-SpaceShip]

Just play campaign and kill some enemies with the needler instead, easier than trying for it online.