Plot and characters exist at a basic level to provide a framework for the action. The action is expertly choreographed and shot – fast, fluid, and brutal, enhanced by effective quiet moments which allow tension to build before unleashing the next assault. The structure, which seems – like an old-fashioned video game – to assign particular weapons to particular levels of the building, is annoyingly clumsy; progressing from rapid-fire firearms, to semi-autos, to blades of diminishing size, to fists ‘n’ feet. It’s particularly noticeable on the floor where suddenly everyone uses machetes.

But to simply enjoy beautifully crafted action … it’s exceptional.