I realy enjoyed the last one, although it seemed a bit easy (to me at least). But this time it seems the devs realy ramped it up.
All is fine until "defeat villains x100" with in itself would take 2 days and 2 hours (or a day, 8 hours and half, if you don't pick any combativity from other tasks, and not count any won with arena wins)
If you're extremely strong for your lvl, and can win every arena and league battle, you will have aprox 27 wins per 3 and half hours (210 min = 6 league battles (35 min) and 21 arenas (30 minutes per 3), meaning a minimum of 4*3:30 (14 hours) and aprox 3 more hours to complete a total of 130 wins (60+70), adding to a total of aprox 17 hours, battling without loosing once and at every refresh. Although this time is divided in two separeted ocasions. But let's be real, no one can beat every single opponent arena throws at us.
80 wins against champions would mean anyting between 20 hours (80*15minutes/60, with only one champion) and 3 hours 20 minutes (with 6 champions), where your objective (meaning the completion of the event's task) is the oposite of that what would be a normal objective (that is, deal the most damage possible against a champion), because every defeated champion represents one day waiting for him to respawn.
Meaning, if one was to use every resourse, i.e, arrive at a task with no combatitivity and with 0 league battles, but with the ammount of money needed for the semi-final task and only one champion, he would take a minimun of 87 hours ( 3 straight days and 15 hours) to complete the last 5 tasks. If he would have all 6 champions, it would go down to 2 days, 22 hours and 20 min.
So, if one doesn't want to spend kobans while trying to finish the event, the best thing to do is to program resourses: •saving league battles until pvp tasks, •villain fights until villain tasks, •itens until selling tasks, •and money until spending tasks. If so, you could finish every one of them.
I know it will be difficult for me expecially the pvp ones, because of my tendency to upgrade every girl to max star, instead of spending this money on my own stats.
Also, it's generaly a good thing to not spend the kobans buying the double rewards until finishing all tasks, because I know how pissed I would be if last day comes and I realise that the task could not be completed, considering a free to play player.
tl;dr it's a grindier event than others, although it's a relative more certain event (looking at you 30 combats with villains and no girl attraction)