Short, quick phrases should be used to generate fight situations. A face punch, like a kick or a shove, is a rapid motion. A knife can be used to make fast slices or stabs. A gun is pointed, the trigger is pressed, and a bullet is fired. Maybe it backfires or hits the target. A shotgun needs to be told in a general direction to be effective. Even though a sword battle is more of a dance than a fight, the moves are rapid.
The characters themselves are what makes a combat scene tense. Smells, sights, sounds, tastes, and touch are all present. Make use of your senses. Do they sweat? Do their hands appear to be steady? Is there a problem with their hearing? Do they swerve and duck? Do you want to take cover? When they're hit, how do they react?
And please don't have your fight scene continue for page after page after page. It gets boring to read about every change, instance or form. Often, the aftermath is more intense than the fight itself. Cheap and good essay writing service usa