I would like to politely issue a counterargument for using IGT compared to RTA, using a run that I did prior to my current pb, shown here: The final time that I had recorded using LiveSplit, as shown in the video title, was 2:47:18. However, the end of the video shows an in-game time that is seven minutes faster by comparison, likely caused by deaths in said run. This time difference leads me to believe that the in-game time is unreliable for an accurate timing method in this regard .
TL:DR-The in-game timer is somewhat unreliable in a run if you die a lot, so it might not be the best final time. also the PC version doesn't seem to have that much faster loading times overall, so there's that
100% no longer requires Challenge Missions to be completed since they require you to beat the game first to be unlocked and would then require you to replay a lot of content you have already played. I also clarified that DLC missions aren't a requirement.