The Horde (18)

A group of vigilante cops raid a Parisian tower-block eyrie to avenge a colleague slain by a drugs gang.

But their confrontation is interrupted by an attack of flesh-eating maniacs, leaving cops and crims no alternative, but to try and escape the nightmare together. Not much originality is allowed to intrude, the basic units of the film being snarling face-offs among the living and lots of mad-eyed cannibalism among the undead, who, it is established, can only be stopped by a gunshot through the head. So why do the humans waste so much firepower spraying bullets below the neck? And how come these zombies move 10 times faster than the usual shufflers?