Item description:

To unlock the trophies: You must do the story by yourself (yes, I tried the save and doing only one chapter just unlock the related trophy), but don't worry, the story mode is 1hour long, maybe less if you're skilled.

By playing the 1st level, you'll get the related trophy (Innocence) + Love and Resolution.
The others trophies = finish the 8 others lives.

For the challenges trophies: just play one challenge and they will all pop.

Enjoy your 100%

NOTICE: I got a "bug" maybe, a trophy asks to get 300pts in any challenge, but I got 300 on only one challenge and the trophy popped, I guess the save "reminds" this "action" and playing one challenge (the water one is the easiest) should normally make it poped. (Or maybe I got mistaken by the french translation that says "each challenges" but on the english description it says "any", that would mean "on at least one challenge"... I dunno, sorry if I got mistaken :p )