You tend to use a lot of adjectives. He races over to the rock. He scrambles over to the rock. Hurries, trots, sprints, dives, leaps, jumps, barrels, slams. The word 'slams', that'll appear a lot in your action script.
Pacing is also important.
If it's not reflected in the script, in all likelihood it won't make it to the screen. I think the challenge is to make that stuff fly by at the pace you would like it to fly by in the movie. As the genre has developed and the pressure has increased to outperform, technically and financially, the last big blockbuster, each successive action film has jacked up the pace and violence in order to grab an audience. It's that aspect of action films that has generated the hot-button public and political debate about the possible spillover of violence from the screen into real life. It's a part of the craft that each action writer has to deal with, and they all have differing opinions as to the validity of the argument.