To answer the original question...my guess is winning the MP games against Master (assuming lower tier) and TM...(same assumtion) and as TM kocking off some Legends...
That said, in such a short time, pulling off such a good average...well...agree what was posted before...2nd or 3rd rodeo I think:)
PS...Kat has already mentioned (not that she needs my help) her uncle introduced her to the game and taught her the ropes...many have had this luxury...I mentored my nephew as well, but after Master and level ...I dunno..45-ish and starter gear, he lost interest in the game even after I offered to upgrade his clubs for him...
I guess WGT doesn't excite the young ones like battle game do...lol!
Edit:
My Faux pas, I thought initially Kat was being called out, hence my reply.
Note to self, no speed reading forums...