I didn't do 56 runs in one key. The gap between achievement and mission numbers increased over several keys. The last key I used only counted 14 runs and I was elaborating on that. Anyway 3 new keys with the evolution event means I don't need to buy more keys from store. So it is all good.
Those variety events usually have goals involving spending resources including gold, fc etc. I didn't have much gold or fc hoarded in the last event and missed the T3 red cosmic talisman. So this time I am hoarding just in case...