*******The Real Solution********
I recommend just getting to the top on your first play through and not worrying about the achievement until later or you might get pretty frustrated. Level select Kamino : The Return. The Easy difficulty is your friend for this achievement. You have to go through a long stage to finally get to the jumping section, and then the jumping section is just as long. It is very important that you take your time and know where you are jumping before you commit (hence the phrase : Look before you leap). If you fall, you may be lucky enough to land on something below you to save you from death. You can not rely on this though, so it is better not to fall at all. You will know when you are at the top when the achievement pops while riding an elevator.
*On my achievement run though, I did fall and get lucky enough to land on a lower platform. I had to make my way back up, but it beats restarting the level. I can confirm that this works.
*If you fall and you see that you are not going to land on anything, I recommend hitting start as soon as possible and restarting the check point (costume change) so you don't have to dashboard. This has also been confirmed to work.
*Dying by any other means than falling is acceptable. The important thing to remember is don't die by falling.