Ultra Stress! is the second stage in Monthly Events All-Stars Stages.
During the boss fight, more Chief Pengs and Firework Guys will be spawned as support/peons.
Beware the Shy boys, they are stronger than the Shy Boys found in Unjust War at its 3-star difficulty!
Strategy 1 (Speed run start): Mohawk Cat, Macho Legs Cat, Awakened Bahamut, Sanada Yukimura/Tropical Kalisa, whatever else you want.
Send out 1 Mohawk Cat, and 1 Macho Legs Cat. Send out the speed uber as soon as possible, then send out A. Bahamut. A. Bahamut should 2 shot Dark Emperor Santa, and then 3 shot Blessing Sloth as soon as it comes out. You should be finished before the Shy Boys come out.
- from August 5, 2014 to August 15, 2014 (Part 2 of 10 Million Downloads Event)
- from November 29, 2014 to December 4, 2014 (during 2nd Anniversary Event)
- from August 3, 2015 to August 7, 2015 (during 20 Million Downloads Event)