9 missions = 9 boxes = random rewards such as clean slate, inno scroll, hammers, spell trace, craftman's cube, medal of honor.
If you finish all 9 missions before reset you will unlock a hidden mission. There is a hidden mission week 1 and week 2. Week 1 requires you to kill 44.444 monsters and week 2 requires you to kill 88.888 monsters, however if you finish week 1 before week 2 starts (wednesday), then you get 33.333 kills discounted from the 88.888, so 55.555 kills left.
week 1 = Swan chair
week 2 = damage skin
If you finished both = title with good stats but last only 30 days.
If you train then you can complete the 9 missions daily if you don't have the time, don't bother.