Graphics have gone down in quality from the last
There is absolutely nothing wrong with the story you have so far. It's pretty good. The graphics are good, and your rendering of the 3D designs for all the different starcraft units is superb (in a way that appears workable I might add, the game made it all look cartoonish). Your fight scenes are also nicely thought out and well done.
Now some negatives. As in the title, your graphics here have gone down in quality. I think, after going back and seeing just a bit of the first installment, it is because you neglected to "shade" your characters this time around. Also, I think you should have more emotion put into the voice acting, it all sounds very bland.
All in all however, this is a fitting second episode. Keep up the good work! 4/5