Several achievements didn't pop

[Dexter010]

I loved this game untill I got gliched achievements.
In AC2 I had 1 glitched achievement, but with some help I got it after tried it for atleast 20 times.
Now, in Brotherhood I've the same, but not with 1 achievement, now I've it with atleast 2 achievements.
Those achievements are: Undertaker 2.0 (Discover the Shrine in the Catacombe di Roma) and Your Wish is Granted (Throw money in a well).
I completed the Shrine Catacombe in di Roma atleast 3 times but still haven't got the achievement.
For 'Your Wish is Granted' I've tried it at different wells and still didn't get the achievement.

So I think this game has atleast 2 glitches achievements instead of 0.
Now I'm done with this game (need af few more achievements for the 100% completion) so I'll never now if the other online achievements that I still need are glitched to.

Good luck with this game and don't play it for achievements. Don't ruin your time on this.

[RealTime]

Did you try clearing your cache?

[Dexter010]

I might try that. And I'm gonna start a new storymode for my 2 'glitched' achievements. So maybe I'll unlock them in my second playthrough.