Don't give up, sometimes you are almost forced to grind for new weapons. Also to cheer you up after a long session, the nioh experience https://youtu.be/IDrizSuIkws
I did grind... thats why I'm so upset... because the Onmyo Dojo Missions took my meticulously well crafted weapons away and give me chopsticks to beat two foxes, Onyudo and Nue all without Quick Change and my Guns (thats what my build uses right now)...
LoL... honestly I doubt Team Ninja bothered to QA all the NG+ modes... it feels like they took a multiplyer and just applied it to all the enemies' stats for each NG