You made lvl 10？ You must have at least 4+ mythic girl. I have no payment method in our country so I never pay one cent and never could get a mythic girl except the basic ones. I went through 7 lvl and hardly could go 8.
I used 3 Myth +2 Leg green setup, cuz green is so hard to charge fully, and with 4 Myth's is less effective,(and i don't have that Sheela girl). My full damage at this setup is about 110k +\- 5 k. And no, as someone said here, i'm not give a damn cent to this game, since developers THAT greedy! This is just ridiculous to "sell" bunch of low-res pixels with 5-frame animation for 100$!