Will be running this properly without retro levels over the course of the next couple of weeks. Finally took the #1 spot on the Playstation 4 Hardest Difficulty leaderboards for Streets of Rage 4 Arcade mode with a 1 credit clear. Still wasn't quite good enough to get an overall S rank for the playthrough but getting much closer (I'm guessing it's around 350k). The last few levels were pretty sloppy since I did take 3 deaths but had a lot of very solid levels throughout. Was by far my best and fastest complete run of this game so far.