Well I got pass 12-5 using 60k Main Team and At least 26k pwr on sub team, Practically if you want to pass this map easily, you just need helper that can help you finish the map(Probably 65k+ Pwr Helper Team).

Well that said I pass this map 2* cause my Helper have 2 6* and 3 5* on the team so that can't said I really pass it by my own power