Alright, I had checked his previous submission and I couldn't find a reference to it. In his submission text he does talk about his choice between the hidden pill in the first sewer and the one on the roof of the building.
For those who may not know what I'm talking about, right around frame 3890 or 1:04 in the encode. Instead of jumping down the sewer at that point you can actually jump on to the beam above and proceed into another construction area. I'm not entirely sure if it's faster or not since it's more of a vertical climb so there wont be as much running.