Overall a nicely written and researched document, well done. The original concept art is good and it is good that you've identified components from the tutes that can be used. It would have been nice if there was some artwork giving a visual sense of what the layout of the level/ui looks like, and I would have like the treatment section to have more detail on exactly how a mechanic works, instead it was a bit vague. Despite this, this is great work!