personally im curious if they'll add events in the longterm....
EDIT: ALSO IF YOU DIE (without reviving) ON THE SECOND STAGE YOU'LL LOSE ALL YOUR GACHA ITEMS LOL
please be wary. may want to stick to the normal stages instead of the nightmare stage
just a heads up... if you are not a fan of heavy grinding then pass this game, in order to move to the next stage you have to clear 100 floors of 1st stage.