@NinSageThat part about passion really does shine through in Gunman Clive 2. There are a lot of little charming touches and details that show the game was made with care.
I've made my it about halfway through the game with Clive and Chieftain Bob. Clive plays just as well as before, while Chieftain Bob feels a bit faster. The main difference between the two is that Bob doesn't shoot enemies; instead, he pokes them with his spear at close range for twice the damage of Clive's bullets. This changes how you approach levels and play the game, since you don't have the choice of taking foes out from a safe distance. At times it's almost like playing a different game. Even with these differences, the levels are designed in a way that accommodates Bob well, while still feeling perfectly suited for Clive. It all works better than you might expect.
I also like the increased color palate. Seeing the color change with each new region of the world you traverse conveys a strong sense of progression.
Really, Gunman Clive 2 has been an ideal sequel so far. It expands upon what made the original fun, while expanding the scope and adding additional twists and flourishes to the familiar. Throw in a great soundtrack, some completely new mechanics, and new ways to play, and you've got a fantastic game.