Spectrum dance saber

[MaccaCFC]

Hey, I just acquired the spectrum dance saber.. I went on evil killing spree in free market bazaar to try get achievement dance dance disfiguration.. my achievement progress stopped at 80% despite me killing dozens and dozens of people in spectrum rainbow mode. I'm starting to feel bad for them now lol. Can you look into if there is a tracking bug?. thanks.

[TheIncredibleHim]

I'm having the same issue. My counter initially stopped at 20%, then wouldn't increase no matter how many enemies I killed during rainbow spectrum mode, then it went up to 40% and won't increase further. I'm on playstation and my username is TheIncredibleHim. This is ruining my experience.