Currently, the achievements in game are quite boring...

- Complete 100 dungeons.
- Complete 1000 dungeons.
- Defeat boss X.

etc...

I would like to see achievements that make you rethink strategies and revisit old content in different ways, for example:

- Defeat King moogle XII while all other lesser moogles are still alive.
- Defeat Titan Hard mode after every player in the group has received at least 1 mountain buster in the face
- etc!