Sound effects are pretty heavily recycled. It seems like the same sound is used for punching, and for indicating you hit a map marker, and... well for about a dozen other actions as well. I swear, sometimes I can't tell what the background noise is supposed to represent. There's a train station that has an ambient sound that could be rats scurrying, paper crumbling, or a dozen people chewing at the same time. Other than that, you've got pretty generic action game music, and pretty generic voices to fill things in. To top things off, no one's lips or facial expressions change or move at all, making all this a big puppet show.
There also seems to be no sound for connecting a hit. So you'll hear the whooshing of your attacks, but there's no satisfying smack on the end of it to let you know you connected a hit. Add this to the graphics that are often jittery, and I don't know how to describe it except as a hot mess.