We render some people as good and bad but can they really be confined to these narrow categories?

1. In everyday life we never render someone solely as good or as bad at least we never do it rationally. Usually we render some acts solely as good or bad. And I think it's a quite important distinction. Because even when we say that a person is good or bad, in reality we mean that acts of that person, which we perceived, were mostly good or bad, So I think the better question is if acts can be confined to those categories.
2. I don't think that the "good" and the "bad" are narrow categories in itself. But I don't quite understand if you deem them or the dualistic approach as narrow.