They are too grindy. Im at level 13 himmlstein. Completed all challenges and can get SA with around 2 million points. Yet I still need 4m for level 14, and I think its 4m per level and 8 in the lasts ones. So if I could hit reliably 2 million points per level means that I have to complete the level perfectly around 20 more times… ofc i fail sometimes, so I have to replay it much more
Make that mastery level 20 exp is at current level 15 or similar, because it just makes no sense to grind that much for almost nothing.