Can anyone explain to me what the Sweep buttons are and what they do after defeating a Hero Battle? One is red and the other is blue with different icons inside of them and a different number value. What does it all mean? Thanks a lot.
A sweep is really an auto completion of that battle. So you do it instantly with no effort on your part.
The Blue button is a single sweep, meaning that you only do it once.
The Red button is a max sweep (up to ten) meaning that you use up to 60 stamina (120 for elite stages) to sweep as many times as you can.
Hope this helped.
Personal Might: 10mil
Yeah, sometimes you need gear from a battle, or pieces, and you have to do that stage multiple times. It also earns you exp items to level low heroes that couldn't do that stage otherwise.