When in partial cover, my opponents seem to get a freekish number of 'leg' hits that go into the dirt. That's won me more than my share of battles.
Despite the fact that I do enjoy a good running battle with fast mediums, I'm known as an assualt mech guy, and I'm pretty good at slow, plodding assualts.
The one thing I'm rediculiously bad at is running Turkinas. I've had some many defeats snatched from the jaws of victory by head hits on Turkinas, especaly custom Turkinas, that had up to then performed superbly in the battle. In campaigns, its cost me a number of important cherictors. Oddly, I haven't stopped using Turkinas yet.