You've got bits and pieces everywhere with dialogue problems, from what I can see.
Remember that dialogue goes like this :
"placeholder text," placeholdertext said.
Also, it's loose, not loses (unless you have that abomination that is autocorrect).
Though I would like a tad bit more description, it seems fine. Execution is fine as well. Though a little reminiscent of your average FPS opening, I'll live with it.
Very well written. :3 Although frankly I would have preferred if the Gremlins had won the fight, or at least some had survived. :U I'm a Gremlin kind of person, not a Knight.
But still, very nice story. :D