Last enemy in my trial:

http://ipic.su/img/img7/fs/ObeOP.1471576149.png
This my team: posion spec, Iruka tanking and destroy Gaara ult, Kiba envenom every body in enemy team, Kabuto Clone, Clone, Clone and etc.

Last run he gave my team 20,000 damage... I am afraid that soon I can not pass it without losses ninjas. In other setups, i lost 1-2 ninjas in first round instanly. Kabuto tanking 16k dmg >.< What are the difficulties you guys and what tactics you use?