This achievement is unlocked when you finish the third mission called "Techno Ninjutsu".
This level is VERY heavy on platforming. So you will get very good at platforming after this level.
Overall this is a very easy level, you may die allot due to falling off the edges but no big deal just keep on moving forward.
The hardest part of the level is the part were you get to the pillar platforming (EDIT: In the below video it starts at around 5:25). You will want to do ONLY single jumps at this part in the level. The pipes and pillars are spaced out for a single jump. A double jump will have you jumping over the pipes.
The final boss is pretty easy. When he is on the outside running around don't try to chase him just wait until he attacks, after his attack he will pause for a second, attack him then. When he jumps in the middle wait for the red lines on the ground before attacking him. Try to avoid preforming your jump attacks (or slams) since he will hit you for more damage then you are doing to him.
During this level you will unlock the "Used Dons special move" achievement early on. Master Splinter will let you know when to use it :)