You can summit and get back to the car in one day, but this means that:
(a) You have to get up early.
(b) Your knees take a pounding.
(c) You miss another evening playing cards in the Adamekhütte.
So, we came down the next day, taking a different, longer route to the Hinterer Gosausee.
Glacier, hut, Klettersteig, extreme mountain beauty: Dachstein FTW!