Great win, but I think you got super lucky on the board on the second half of the last boss. Your shields kept him stun locked until you could kill him.
I am on season 3 right now I am hoping to get hero's like Mitsuko and Ursena the ones I have now are 1 Rigard 2 Melendor 3 Isarnia 4 Hu Tao 5 Kadilen I hope I get some new that more powerful then I usually get.