What to do after to you get level 50?

[Onji_T]

I seen a lot of people say Achievements which look a lot like Xbox achievements or psn type trophies. Do they actually do something useful in 14 or its a here is something to work for type of deal?

Couple years later I still never got all the achievements on FFXIII on PS3.

The fact that this is all you took note of, out of what people suggested, probably says something. To answer your question, no they don't do anything practical. They are really more for bragging rights at the moment.