i got this achievement using method 1.
first let me say this to the people who cant seem to get it, it has nothing to do with skill at all. (your only hitting two buttons will moving the joystick slightly.) the people who have this achievement have one thing you don't have and that's patience. i got the achievement after maybe trying for maybe 15 min and the reason i failed everytime for the first 15 min was because i wanted to speed things along and try to jump too far away or at the guys who pop up underneath you. let them come all the way down the hill and when they pop up underneath you let them walk away and then come back. it might take alittle longer but then again maybe not. because if you rush and fail it will take forever.
Completed Retail (??): Recent - Mass Effect 3
Completed Arcade (??): Recent - Joe Danger
Insider Moves on Inside Xbox gave me a shout out!!
In motion: Backlogged like a mofo...