I'm having trouble too, I can beat Goro and Kintaro without them touching me, its Mileena that ****s me up.
Just Duck and BLOCK, which will be Up + Block, He'll try to Teleport Stomp you often, and just uppercut him when he does.I'm on 270 or 280 something now, still haven't skipped any.
I decided to take a break at the Quan Chi vs. Quan Chi one with the reversed controls. I only tried once and ate it pretty hard. I'm shitty with Quan Chi as it is, but that reversed control thing ****s me up to no end.
The 3 Goros one with Ermac has probably given me the most trouble so far, though.