So, he comes from the future, with future you mean 10 months or 1 year, because his skills maybe come from the future, but his brain is lost during the way,because even assassins from today uses guns,not a simple knife,and knows to hide body and kill guards
Spanish translation is a little wierd,looks like used the google translator that translates word for word and makes the sentence totally no sense in spanish using wrong time verbs and incorrect nouns