Just finished TMNT (2007) this Sunday. All challenge maps done, all goodies obtained.
This was the first proper game I ever played as a kid. I bought it with my own money - I didn't have the cash to buy Shattered Dimensions, sadly - back in 2013.
It took me several months to complete the story mode back then, which is hilarious because I did it in 5 hours on replay.
Like the movie it's based on, it's very good, very underrated but not perfect. Great visuals and music with a unique comic style of storytelling.
Gameplay is like a much faster, more acrobatic and automated Prince of Persia. The worst things about this game are that the controls can be inconsistent at times, there are some areas where it's easy to get stuck and the bosses are too easy.
But overall it's great fun. I replayed the story mode after finishing it to get the challenge maps and it was worth my while.