By the time I had all the achievements I had about 30% left to do so I just kept playing thru the levels but eventually got tired of playing them again and again. So about 15% left I just went to the mountain level and did laps around the lower level and found I got about 1% every minute and a half. DO NOT BUNNY HOP/.JUMP! Just walk, when I was doing a bunny hop around it I didn't even go up 1% in four minutes.
TLDR; Walk around Mountain level on lower level, bunny hops don't count towards achievement.