Baiting us with poor game design? That would never happen!
It’s either a one time achi, only attainable this season, so wont be there next season and you keep.
Or its seasonal.
The achievement says Battlemender(Season 3 DF,) only reason for them to put that there is if its one or the either. If it was a permanent thing you would think it would just be “Battlemender” achi, no season attachment.
My title is goooooonnnneeeeee
Sad! But like legend I suppose. Thanks for doing the world a favor and healing