I can't find a source for this now, but this is the last part of the intro sequence of Doom 2016 (NSFW due to a dead guy, some blood, and earlier in the clip a lot more gore). After they got the sequence audio perfectly synced up for the console platforms and (I believe) the more popular graphics configurations at the time, the director said no one was to touch that part of the code at all, under any circumstances. It's not that they didn't have version control, it was just that it was so finicky that they didn't want to have to go through that trouble again. For reference, this is what it's like off-sync, with the shotgun lagging a bit behind the end.