In the first mechwarrior game for PC, there was a battlemaster, the biggest baddest mech available in that game, with a locust, the starting mech for that game, by ramming the locust between the legs of the battlemaster and firing your weapons over and over again into it's legs until you legged it and it died. The battlemaster was unable to shoot down at more than a 40 degree angle to the ground, and therfore couldn't hit you...
