The Last Day

A soldier in a mechanical suit stands on a rooftop overlooking a walled city, then the scene cuts to a line of cannons firing, followed by a silhouette of a man with glowing eyes, then soldiers operating cannons on a wall, then a soldier using a grappling hook to descend onto a giant humanoid creature, and finally a close-up of a blonde soldier with a determined expression. The setting is a walled city under siege by giant humanoid creatures.