What you'd expect from a sequel: more of what made the first good, with refined systems, more expansive levels, a wider variety of stages, and greater use of the overworld map and the way the various pieces fit together.
They basically tried to do more with every part of the game: the action in the vehicle is more dynamic and varied, the top down sections have way more challenge and variety, and the on foot sections are more elaborate. I think they were all successful, though the on foot sections got rather frustrating. I also ran into a soft lock by saving while on foot in a place it turns out you can't get out of, so watch out.
Sill need to play #3, but if it's as good as this one, it should be a lot of fun.
They basically tried to do more with every part of the game: the action in the vehicle is more dynamic and varied, the top down sections have way more challenge and variety, and the on foot sections are more elaborate. I think they were all successful, though the on foot sections got rather frustrating. I also ran into a soft lock by saving while on foot in a place it turns out you can't get out of, so watch out.
Sill need to play #3, but if it's as good as this one, it should be a lot of fun.