Duo added some new Achievements a while back (I can't recall how far back, maybe a few months).
There's two schools of thought on this & I subscribe to the one where, if you can add a little game to bridge the days that you don't feel like working, that's alright.
So here's the new Achievements:
Considering I 'm in schools & don't have access to cheat-up challenges, the first one is pretty pointless. I'm not going to switch out of schools to do that challenge. I'd love to meet the moron who thought that one out... probably the same guy who thinks the grammar tips are worth anyone's time. Some day he'll read the answers in the red box and say, gee, those grammar tips don't tell you anything you can't find in a good answer in the red box.
I was worried about the schools / no leagues shift a few months ago, but that's working out okay. Meeting daily goals, friends quests, ten lessons a day, 2k XP a week are all goals I substituted for adding a tick to the counter for staying in the diamond league.
One game that would be nice if they threw targets on the calendar. Like if I met all 3 daily challenges, there should be three small arrows in the calendar date, not too big so they cover up the dates. Right now either you meet it or you don't and you get a fistful of gems which you forget about the next day.
I don't have the gold box for a streak over 300 days but I think I'm stuck. I think you have to register for the challenge to get it but I think doing that stores that info in your memory like the timers which means if you clear your duo memory it goes plouf.
The nocturnal one, so far, is 100 lessons to level 8. Who knows where it ends? I haven't worried much about this, I do my work & the chips fall where they do. Since I often complete lessons after ten I suppose this challenge will be in the bag.
It's been so long since I had a new Achievements that I almost forgot about this section.