This is going to be in a slightly different format from usual. The remarks below were posted direct to Facebook after I had seen the film, but I think that it sums it up pretty well – and will certainly tell you if it is the sort of film that you would enjoy!
The film contains all the following genre tropes and characteristics :
Child's innocent total belief in Father Christmas. TICK
Bone- crunching violence throughout TICK
Split and dysfunctional family comes together in the seasonal spirit. TICK
Knowing references to the Die Hard movies. TICK
Tribute to the booby traps of Home Alone. TICK
Depiction of blood and graphic real -life results of said booby traps e.g. bowling balls to the head .TICK
Features lovable Christmas characters such as Santa's reindeer. TICK.
A smart original point made that the existence of Santa and his sleigh would most likely be proven by piles of reindeer crap on roofs.