Obviously I'm playing, and yes, in the 2 monthly events where you get the new sets of girls I spend 40 euros to overcome the 2 steps where you have to get the silver pirates (and only here and nothing in the other events) ... and with that, the immense help of the objects obtained in the arena, a careful planning of the sequence of the quests, I can assure you that the first day you will get to unlock the mythical girl, stopping at step 42/45 where obviously to get 15 mythical event cards there it takes 24 hours. and obviously I don't care about the ranking, I am ONLY interested in getting the Mythical girl of each set.
"...I can assure you that the first day you will get to unlock the mythical girl..."
surely Colosseum is a great help, but 1st day? But, lets calculate:
quest 10 Find 125 event common cards - common CD 24min (25cards) =4 fights (1 free)= 1h40min, or 4 common dolls
quest 13 Defeat rare monsters in the Dungeon rooms 20 times - CD 50 min = 3 passes (1 free) = 2h30m or 15 rare dolls
quest 15 Open any 3 chests in the Shop - (1 free) 2 keys or common chest CD 4 hours*2=8 hours
quest 17 Find 160 event rare cards - rare CD 48min (20 cards) - 7 fights (1 free) = 5h30m or 7rare dolls
quest 18 Defeat epic monsters in the Dungeon rooms 20 times - CD 1h30m = 3 passes (1free)=4h30m or 15 epic dolls
quest 22 Open any 4 chests in the Shop - (1 free) 3 keys or CD 4h*3=12hours
At that point, if you're new player and don't have Colosseum boosters you need 1h40m+2h30m+8h+5h30m+4h30m+12h=34h10min. And you not even close to leg monster.
But even if you have Colosseum bonuses, you need at least 4 common dolls, 7 rare dolls, 15 epic dolls, 5 keys. Which is more then standard yield from Colosseum or about the same if you minus Epic dolls.
in 2 weeks u can do 2 Colosseum, then u have all u need, and of course, i'll save epic/legendary/mythic chests in the tower for the event.... u can believe me or not, but that's it. ah, u know in the dungeon EVERY monster count not only specific... yes? then, if u must do quest 18 Defeat epic monsters in the Dungeon rooms 20 times - CD 1h30m = 3 passes (1free)=4h30m or 15 epic dolls u need not 4:30 hours but 5 mins..... and NO ONE epic doll....
obviously I do the same, and yes WITH help of Colosseum event its passable (still not in 1st day), but what can do new player with Basic sets, and maybe few Event set, up to Legendary cards? He can't pass Colosseum, just cuz he will is run out of cards somewhere in the middle (if lucky enough).
And no, if you need to beat Epic Dungeon monster, that means you need to beat Epic ones (5 of them), others not counts. You didn't know that?
Only very 1st quest of that type allows to beat ANY monster, others is rarity specific (Rare, Epic, Leg and finally Mythic (quest 43, with CD of 8 hours))