Parunthu offers a gritty portrayal of a morally complex protagonist whose abrasive nature drives the plot. The screenplay attempts to balance intense action sequences with emotional drama, though the pacing tends to fluctuate, with a stronger first half that establishes characters and conflicts effectively. The second half slows down, focusing more on the protagonist's internal transformation but occasionally losing narrative momentum.

The story is straightforward but compelling, relying heavily on Mammootty's commanding screen presence to carry the film. While the screenplay is conventional, it manages to keep the audience engaged through its raw depiction of human flaws and redemption.

Musically, the film lacks memorable songs, and the absence of a notable music director is felt. The background score is functional, supporting the tense and dramatic moments without standing out. Overall, Parunthu is a character-driven film that appeals mainly to fans of intense drama and Mammootty's acting prowess.

Mammootty: Powerful and intense portrayal of a ruthless moneylender, effectively conveying the character's complexity.

Jayasurya: Supportive role with a convincing performance that complements the lead.

Raai Laxmi: Adequate performance with limited scope.