Post-apocalyptic survivor evades mutants through an overgrown city

A lone male survivor in ragged camouflage gear hurries through the overgrown streets of a derelict post-apocalyptic city, vines reclaiming rusted skyscrapers and feral mutants howling in the fog. The ruins groan as unstable buildings tilt and radioactive storms brew on the skyline. At the 3-second mark, he slides under a falling girder toward a fortified bunker entrance. Camera follows low and gritty as embers from distant fires flicker in the twilight. He kicks through a barricade, seals the blast door, and arms…