I just beat this game for the first time with Clive on Normal, and the game tells me I did it in 1 hour and seven minutes with 79 retries, probably most spent on that train boss lol. I'm not good at video games, but that's longer than I expected, and I definitely want to play more of the other characters and tougher difficulties.
Overall I liked the style of the game and thought it was really engaging. Some of the elements that were borrowed from other 2D platformers were cool, but some did not work as well in Gunman Clive (bouncing mushrooms, particularly) because of how floaty he is. But still, definitely a great game - game of the year so far