Tailer=bad, everything else=good
Alot of potential in the series itself, but the trailer seemed kind of weak to me. It felt more like watching a very short story (or an opening cutscene... a bad one at that) then a trailer which is meant to grab attention and make you want more. I guess you just put too much information in the trailer itself. Try using more visualy stunning grabbers (and you did real well with the animation) to tell the story rather than telling us outright. Give cliff hangers and keep us asking questions. I give a moderately low score for this, but I expect that I will be giving higher points in the actual series.
But aside from all that, I can not wait for the actual series to come out. Your animation is good, the story line seems fluid, and if you can make your battle scenes look good like you did with how he killed those three things, then I see alot of potential.
Overall: Alot of potential, but the trailer was just.... ugh...