A lot of rinse, wash, repeat. Events are too tightly crammed together, and usually wind up overlapping. Event rewards require way too much time from players, and everything costs Crystals which should feel rewarding to spend on the gacha, not required to play and reset events. Every event always revolves around a lame new gimmick and a new child to counter said gimmick, but the new child is locked behind a gacha banner (RNG). Boss gimmicks overpower the teams you've built unless you are lucky enough to get the new child to deal with the gimmick. And after the event you'll likely never use the child again. The pools for equipment and characters hasn't been updated since launch either, so prepare to get lots of the same stuff I quit playing due to Line and Stairs' constant greed and BS drop rates. Oh, and they hold limited skin drops to chests that have a very low chance to appear after event battles...and the skin has like a 0.00001% of even being in the chest. Game sucks.