Hello.
Yesterday, I was playing with the new skull Acrophobia, and also wanted to collect the 4 remaining skulls that I had left in Halo 3. I picked up the skull in The Storm (Catch) and the skull in Tsavo Highway (Tough Luck). In both cases, the achievement unlocked, well atleast the achievement of each skull. After completing Tsavo, I noticed that the achievement Witch Doctor was still at 9/13. I decided to collect the other 2 without Acrophobia and in both cases, I unlocked the individual achievements and I advanced in the progression of the total of skulls. After that, I was at 11/13, and even after a lot of tries (trying to pick them up without Acrophobia, with a guest, with another skull, another difficulty, with other profile) nothing increased this achievement. I really don’t know what to do to fix this issue.
Thank you for your time and any help that you can offer.
