The problem with this is nuzlockes are supposed to have a stratgey element to them. This nuzlocke has none of that. It is “Can you play songs good? enough to live” yes? well then you will do just fine. In most cases you can cheese your way through hard sections by spamming the wrong note since wrongs lose less health than missing the note. Also. Playing on Extra Extreme if you are a “Extreme” player makes no sense. Extra Extreme and Extreme are the SAME difficulty. Extra Extreme was added when Arcade Future Tone was released in 2013 as a way to give old songs sliders. Now a days it is also given to fix older charts/make charts harder/or give another chart to songs. That means if you are a “Extreme player” you are also an “Extra Extreme player”. Lastly if you are god or atleast semi good at this game you can most likely pass atleast up to most of the 9.5s leaving no challenge except for some of the 10\*s. Your run will basically never die until you hit those songs which fun fact. It takes about 13 hours to play all 252 songs in Future Tone. Your run could end in seconds because you got Intense Voice or last 12 hours at that point. You wouldve had to go do something else in Life. Your whole 2D PVs don’t care makes no sense. If the vocaloid that is “active” is your main vocaloid (first in module selection) then why can’t your first vocaloid in 2D PVs not be your “active” one. Most people doing this will run on a shared preset making it so 2D PVs will auto change to whatever “active” vocaloid you have. In all your nuzlocke is just about skill and at that point why not just play songs you want to get better at? Lets say your struggling on Intense Hard. Well why not just go practice it other than maybe hopfully getting the song then failing. Life is a bad mechanic to base this on since you don’t have to do any holds and you can quite easily cheese through hard sections in most cases unless the song is WAY above your difficulty. (Like I said wrongs lose less health than missing. Almosts (a feature you can turn off) counts as a wrong but actually loses no health just like a safe would allowing multi notes to be cheesed even easier.) Rhythm games are not nuzlockable unless there is actual differnces in the character you choose as well as a story. Diva has none of that. A game with character differences is like MuseDash but with no story there is no point. Have a good day! 🙂