Hello there,
After combo changes, punching x12 is a breeze, maintaining this combo is also not a problem (Naramon Focus School is here with its Power Spike).
That melee weapon sweep everything out of your way, no matter what the level is. As you can see below it was tested on the toughest enemy unit. It was tested on two hours Arbitration Survival and it melted literally everything out there. There was no too high level to oppose that Reaper.
Current melee changes are so to damn absurd that almost every melee weapon can do the same with this exact build. Try it, you wont be disappointed.
Enjoy, THeMooN85