I know the pass is around 2 weeks long, but the more you progress the harder become to complete it, the missions in the pass gives you around 4k exp, at level 9 to 10 is 6k (something like that), once you got the ice dragon you need 2 days of challenge to obtain the next tier.. this and the maps for mission don't always showing up makes the grinde way too much if we can't play the game for many hours. Please considere making easier to get exp, this pass shouldn't need a lot of investment time