critic (n)

Her critics say she is leading the party to disaster.
He's his own worst critic.
The art critic expressed admiration for the brushwork but was a vocal critic of the color choices in the painting.
Despite being a harsh critic of the new policy, she acknowledged its positive impact on certain aspects of the organization.
The music critic praised the singer's vocal range but was a harsh critic of the song's lyrics.
As a literary critic, she carefully analyzed the novel, pointing out both its strengths and weaknesses in her review.