I haven't been able to pull it off in master mode actually, even after around an hour of trying. I always get destroyed by the boss before I get to yeet him. I tried it in normal and got it the second time around. Maybe if you have the artifact power high enough not to be under level the master mode will be easier.
![Solo Flawless Warlord's Ruin in LESS than 10 Minutes (9:45) [First Sub 10]](http://i.ytimg.com/vi/UjOoD6kLCMU/mqdefault.jpg)
This is actually a pain in the ass to pull
Off.
I haven't been able to pull it off in master mode actually, even after around an hour of trying. I always get destroyed by the boss before I get to yeet him. I tried it in normal and got it the second time around. Maybe if you have the artifact power high enough not to be under level the master mode will be easier.