Which window is the "big" Achievment Unlocked?

[DuneWarrior]

Seems that window gone .. hiding in my installation, anyone know what the name of it is so i can go hunting for it? Or if its even possible disable it ?

I seem to have lost that window and never see it on any toons/accounts.

If anyone know what the window name is im sure i can get it back :P

Alternatively if i missed an option to enable it (looked them all over upten times now so i must be going blind) would anyone know that ?

Thank you in advance

Seems to have lost mine, and would love any help on how to get it back - short or resetting all my windows.

If there is an option ive overlooked that would be awesome but ive perused the ingame options (advanced) several times.

... halp! :P