Item description:

This has all the main story achievements + the collect all x type achievements.
Only thing missing are random ones you can do on any of the saves included in the set, such as all hobbits to isengard or use a certain weapon.

Save 14 is missing, so you must use save 13 and finish "The Secret Stairs" and continue on to Cirith Ungol and complete that for achievement. Then continue on the save 15.