Very tough achievement. Requires patience, dedication and the possibility of getting arthritis.
1) Enter the cheats. Although possible without, these will save you from lots of frustration even if you reckon you could do it without. Who'll know anyway ;)
2) Get the tasks done that cannot be done in a combo first. You can do everything else in a combo after the 2 minutes is up.
3)Use youtube video guides. Watch them a few times, then learn the route they use. If you find a better way of doing things that suits your style more, do it.
4)Try, mess up, try, mess up, try, mess up, try, mess up until you finally do a goal. Do not let this make you angry.
I am in the process of doing this achievement at the moment, am currently stuck on Lansdowne. :(
The videos for the two hardest goals:
(not my videos, but I used them!)