What is there now makes perfect sense to me, and is factual. The majority of critics liked it, and therefore it received mostly positive reviews. Forgive me if I'm wrong (and I apologise if I am), but I'm guessing that English is not Renesis' first language. An acceptable alternative may be: "The film received a mostly favorable critical reaction". On the other hand, if the critics' verdicts were split 50-50, then you would say "The film received mixed reviews" or "a mixed reaction".