This goal has the following fine print specified by fryhole:
Note: I started learning German in early 2015 with a big six-week push, but studying German was interfering with my Spanish practice, so I backburnered it. It's a year later and I'm ready to rock.
This is all tracked automatically, so there's no need for fine print. Either I've done the work or I haven't. I would note, though, that this isn't my only means of learning German. I also have two commercial programs at my disposal (Assimil and Fluenz), both of which I consider more comprehensive than Duolingo. Duo's a tiny part of my overall study and practice program.