I handed over the sniper rifle at the beginning of the mission, did not fire a shot and was playing on heroic but nothing unlocked. Others seem to be having the same issue [http://www.trueachievements.com/viewcomment.aspx?commentid=884088#vch]. Please fix!
> 2533274841165429;1:
> I handed over the sniper rifle at the beginning of the mission, did not fire a shot and was playing on heroic but nothing unlocked. Others seem to be having the same issue [http://www.trueachievements.com/viewcomment.aspx?commentid=884088#vch]. Please fix!
Hey, there!
Does your achievement show as “Done! Unlocking…”? If so, then it actually has registered and will unlock eventually. If not, then you will have to repeat the requirements for the achievement until it unlocks.
There seem to be intermittent issues with Halo 3: ODST achievements in the MCC that cause the achievements to not register, even after completing the requirements. The only solution at the moment is to repeat the requirements again and again until it works. Usually, a second play-through for the achievement will work, but I heard of one guy who had to play-through an achievement four times.
Sorry that there’s no better fix. Good luck with getting it! 
It doesn’t say done so guess im doing it again…
I’m having the same issue here. Done it 3x and still no achievement
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> I’m having the same issue here. Done it 3x and still no achievement
Please don’t revive old topics thanks