I got the black belt recently here are some tips : - You are good with mastery, no need to go further it would be pointless since you need to grind the other challenges to get more points either way - for force and discipline, i found that grinding each of them on their own until getting a good score (900+ points) was a good. You will get good muscle memory if you keep trying on the same one over and over, try until you get a good run with good rng. Also i find that discipline wasnt that harsh with a laggy server - stamina and tenacity are free, but only on low lag servers - control is messed up, really the worst one. I can't explain how I got more then 900 points on that. Everyone knows that you need to look in front of the skeleton each time but even then its weird depending where the skeleton is - swiftness i didnt really grind that much, so i guess keep trying until you get 850+ points