I watched this yesterday and I'm really looking forward to this DLC. It looks very similar to the same game mode in Streets of Rage 4, which has been a lot of fun, so no complains :D DotEmu have been smashing it in the beat 'em up department. I hope we get to see sequels to these titles!
As I was writing this comment, I got the notification for the trailer in the NOA channel: https://www.youtube.com/watch?v=spYUSpJ5H74