The Build it gives is "meh" I recommend going Support
Something like this -
https://alloder.pro/calc-en#b$qgsc60u40f…i142c7o::13ydj3
Try get some better gear and Aim for
250 crit dmg, 250 physical dmg
250 swiftness (if u cant get 250 swiftness its Ok, but its good to have)
250 concentration (try not to take much from Vitality)
150ish Bloodlust (try not to take much from Vitality)
250 proficiancy
300+ Determination
So all u have to to in this Build is to Use Power (Buff) which increases ur dmg by xx , It also gives u a Rythm, while this Rythm is active your Flying blade will refresh Power when you use it, Power is Offensiver buff
You can also pop either Temporal acceleration (speed buff) or Bloodthirst (Bloodlust buff) depensing on what U want to use, same here each buff gives a Rythm and your Accoustic barrier refreshes your Defensive buffs and these are Defensive rythms.
You can only have ONE of each Rythms up, a.k.a ONE defensive and ONE offensive , So you can run Power + Bloodthirst for example (which is best for when u just kill stuff)
After knowing rtyhms its pretty simple
Use Power + Temporal acceleration or Bloodthirst then Flying Blade and Spam Disharmony, then Flying blade as Power buff is about to run out to refresh it so you dont lose it, same with Accoustic barrier, use it either when its Of cooldown to refresh Bloodthirst or Temporal depending on which one ur buffing or wait for Aoe/dmg on you to come.
and then use Power+ Temporal/Bloodthirst (the buffs which has like 20 sec cd to get rythm) and just continue Flying Blading and Disharmonying
P.S Cadenza is there for Emergency healing - if you buff Bloodthirst it should keep you Up