Arulnithi's acting is restrained in many ways. There are certain scenes in which he underplays his character where he could've easily emoted in a much better way. Heroine Remya Nambeesan doesn't have much of a screen space.
While the first half is a fun riot, the second half is draggy and begins to test your patience. Background score by BR Rejin is surprisingly good which is a positive but his song has hardly any impact at all.
With a theme as unique as this, Naalu Policeum Nalla Irundha Oorum could've been much better had it been executed with little more intent. The movie is a rough mixture of comedy and drama in inappropriate proportions.