A satire of overamped gamer culture that is itself too overamped to be much fun, “Guns Akimbo” takes a while before it stops showing off its virtuosity — shots that turn cartwheels, frantic cutting, an onslaught of graphics — and finds a groove.

Daniel Radcliffe plays Miles, a coding drone who spends his days glued to various devices. One night, he gets into an insult match on a site for Skizm, an underground fight club that selects random oddballs and criminals and pairs them against each other in mortal bouts. Spectators watch remotely, à la “The Truman Show.” Although there is a system of scoring points, the violence is real.