First of all, happy account anniversary! I'm OOT™ , and I'm honored to review your work.
My Thoughts: You have an interesting idea for a longer story here. I like the setting you chose for the story, and I could easily imagine the robber being chased by the hunter as you described. You have created two interesting characters, both "bad guys", and it would be interesting to see which one would prevail in that instance.
My Suggestions: I would omit "slowly walking" from the first sentence, because your description that he "creeps" allows the reader to infer that he was walking slowly. In the third sentence, "guardians" is spelled incorrectly. In the next sentence, "robbers" should be "robber's". Next sentence, I would omit the comma and change "echoing" to "echoes". I am unsure of what you are trying to say a few sentences later with "instants changing". I think that, in the context of the rest of the sentence, "and the robber was unable to tell" would work better here. In the next sentence, "cowboys" should be "cowboy's". Toward the end of the story, you say "A growl sounded from one of them" after just mentioning eyes. Are you saying that a growl sounded from his eyes? In the last few sentences, "sheriffs" should be "sheriff's" and "California" should be capitalized. Also, at the end of the story, you switch from present tense to past tense. I would suggest changing it to present tense to keep it fluid with the rest of the story. Finally, I would suggest separating the story into different paragraphs to make it an easier read.
Overall: This was a good piece that would be much better after a thorough edit.
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