MaxwellCarter’s review published on Letterboxd:
One of the most out of left field horror films I've seen. I thought it was going to be like Ready or Not (2019) or You're Next (2011), so I was nowhere near expecting an eco-horror. Besides being shocking in terms of the horror subgenre, Silent Night is a tonal mess. It's hard to figure out if this film is intended to be a dark comedy or an apocalyptic drama in the same vein as Melancholia (2011). In the end, it’s a much weaker version of It's A Disaster (2012).
Silent Night lacks the self-awareness and humor that it thinks it has. It ends up being a melodramatic slog that has us questioning who it’s for and what its purpose was. Was it simply a vehicle for Camille Griffin to put her son Roman in another movie post-Jojo Rabbit (2019) or an attempt for her to cash-in on her son's newfound fame? It's worth noting that this is Camille Griffin’s feature debut and Roman’s younger twin brothers appear as well.
The movie is truly a mystery in execution and existence. Why did Keira Knightley and Matthew Goode sign on to this? Are the two of them and the rest of the cast good friends with the filmmakers? The biggest question of them all is whether this was supposed to be a dark comedy or not. There are plenty of inclinations it could be, with moments of Griffin poking fun at the dreadful characters we have the pleasure of spending so much time with. If Silent Night committed to the dark comedy, the film would have been enjoyable to watch. However, Griffin appears to have great reverence for her characters.
So many moments of the movie venture into melodrama territory. If comedy was the end goal, why would Griffin give her characters so much sympathy? The potential moments of comedy appear almost accidental because Silent Night feels more like a melodrama than anything else. It feels all over the place because it tries to blend too many genres with little success.