I was hoping overall the game wouldn't go where it did, or would have a bit more to it thematically. I think the most interesting element was the "what if" of an apocalypse or infection. The dream sequences were especially nice and I think the overall gameplay loop/monotony were well executed.
I feel the "good" ending could have been stronger with a bit more story, or a sequence that visually 'made sense' for the other ending (i.e. they "didn't find anything"; maybe I missed it but I didn't see anything to imply a decent search would come up empty... a hatch in a floor in a corridor with a single light above is pretty telling something's amiss, no?).