Overall a neat space concept, with a very nicely done game treatment and concept document. I am glad to see a plan to effectively make a "vertical slice" with one of each of the level types, as the overall count of levels seemed too high for the time available. The scope sounds good in terms of the survival levels as combat isn't required. Would have loved some more illustration of what phase 2A would look like, as it is a little tricky to visualize.
Looking forward to seeing how this one turns out!