Injustice: Gods Among Us Ultimate Edition (PS4) Battle Mode - Help From Above | Solomon Grundy

In this battle you fight 6 random opponents on the game and the objective is to defeat them, but their red health is regenerated fully every 30 seconds, this battle is very short and simple, I was a bit worried it would be like Countdown but this battle doesn't penalise you for failing to beat your opponent in under 30 seconds.