Got past extreme peaks 100 finally. Had to get Meng to lvl 50 to do it. I used this team. Choi Yuhyun will get a free attack off at the beginning like an asshole but that's the BS you deal with at lvl 80+ in towers. I defended everyone to apply Yuhees poison on his bro. Then focus attack on Yuhyun to kill him. After that I killed Beernox (who should get killed in 1 turn if you have a strong Baade and Tayang) and then Byun. Then just cleaned up the 2 Akaonis

I forgot to mention the high level towers give you a good amount of high level B and A grade LB materials too