First go to Hu Lao Gate Stage and use Dian Wei. begin the stage on Cao
Cao's attack route and run past like 3 enemy platoons and have them
chase u till your out of range of any friendly troops that will take
your valuable K.O.'s and turn around and kill em continue this till u
get to hu lao gate u should have 400 to 600 kills  when u ram your
way through the gate kill Diao Chan and Li Jue so nothing is in your way
and dont go around killing gate captains cuz they'll bring more troopz 2
kill finally when youve had your fill of kill go and kick da crap out of
the remaining gate capn's and finally Dong Zhuo