I am at 40th floor. No refills and not lose any battle, and so far i lose 7 heroes due curses and have other 14 heroes at 1/2.
Used some nados (10 or so) until now to prevent losing other heroes, but all my best heroes are all in game and have at least 60 other to eventually sacrifice.
I started with 3* first 7 levels, then switched to 4* (not emblemed) and after 30th floor to emblemed 4* mixed to not emblemed 5*.
I was probably over prudent for my strenght, but i wasn’t really after a good score.
My roster allow me to enjoy this event, but i do think this is just too much for most of the people and rewards are simply incoherent for the effort.
My own enjoyment, which fall probably on a 1% playerbase shouldn’t be reason of frustration for the 99% rest of players.
And to complete this tower, many probably will wait a year or more.
I like the challenge, but probably a second softer version of this event could be a good compromise for all the people.