Tough nightmare mode this week

It took me 5 tries to beat the regular challenge nightmare mode (atk stats 140k). The third boss is definitely tough. In my first 4 runs, even with my favorite setup of TL + Yang's Sunfire Palms + Destroyer (5 star attack and CD passive boost), the boss still had at least 10% HP left when I ran out of time.

The only change that worked in my 5th try was to swap Murica's Super Painstrike (+60% pet attack) with Super Encouragement (increase my skill damage by 5%). That enabled me to beat the boss within the time limit.