Skiping all lessons with a single big test
Why isn't that possible? I found just one big test, but it only spared me half the lessons. I am a native speaker, I just want to "prove" it to the site. :) And then help with translating a bit.
All the lessons aren't available yet. If you go and check your skill tree you mostly likely see that there's no new material available after you have mastered everything down to the present perfect. I'm somewhat confident that after they unlock some new material they will add a few shortcuts along the way. If someone knows better, feel free to correct me.