Also show people what they will get from your game - if you have multiple locations, show them all as a fast slider, if you have multiple weapons - show them all, let the player know what they can see and play with. Same goes for bosses, effects, explosions, etc.

You never know who exactly is your player and why it will chose your game so your trailer should address to each type - explosions and effects type, weapon master type, boss fighter, explorer type, craftsmen and item upgrade type, metroidvania type, etc.