I like that instead of cartoon representations, it looks like they went for as much realism as you can squeeze out of the engine. You could change some attributes physically, making them look ridiculous like in the screenshot, but the overall look was satisfactory.
When it comes to sound on a handheld game, especially one you spend a lot of time with, you would try to make it as non-repetitive as possible. Well, you would try. There isn't much thought into the music, but it doesn't play a role in the game anyway.