In an action scene, one in which the emotions are high and the reader is on the edge of the seat, the mood is tense, the writing tight. Use all the senses, the coppery taste of blood, the cold sting of the rain, the smell of old fish. Limit the number of adjectives (descriptive words). Cut any that aren’t absolutely necessary. Find strong verbs and let them do the work. Avoid adverbs ( –ly words).
The pacing in an action scene is fast. There’s no room for background or description, which will slow the action. Save these things for slower scenes and when you want to give the reader a little time to catch her breath.
In action, every word must count. Vary the length of your sentences, using short, terse statements and fragments mixed with longer sentences. Keep paragraphs short. Eliminate “and” as much as possible. Don’t use words that dilute the meaning, such as “almost,” “seemed,” and “nearly.” Make it hard and fast; give it some punch.