PS3 version
Judging by the video, the gameplay of the second part exactly repeats the original (even the main characters share the same techniques and abilities) with only one adjustment for the best picture. But when you play, you understand that nothing more is needed. The plot is a secondary thing here. All the fun is exclusively in the gameplay (pirouettes, running on vertical surfaces, mutant abilities...).
The game is unusual and exciting, and that's the main thing.