I don't understand why I'm a truck running over people (is that an anime thing? what do anime tropes have to do with games?), and not having any visual indication about who/what the people are (why does a swordsman and a priest look the same) basically makes this totally completely random. If you could have something that indicates 'This kind of character is good and you should go after them and this one isn't, so avoid this one" then maybe it would be more engaging, and you could design the level or waves of people spawning around the player having that base knowledge. But since I don't have any reference for what's "good", either visually, or at least a written description at the beginning explaining what the "good" character types even are, and instead it's just a random number that pops up after hitting something, I don't feel like I have anything to improve at or to even engage with.