Sub 1:00 single player is possible. I am now cursed to run until someone breaks the barrier, for I have seen the path.

Two notable splits:

Roy, spawns at around 28.8ish. This is about 2.5 seconds ahead of Captain JJ's 1:02.83 with Simon, which is the current all character record.

Doc spawns at around 44 seconds. At this point, adrenaline kicked in and screwed me over HARD, largely due to me thinking that Doc had spawned at 41 seconds.

This pace, combined with a solid final segment, is the path to a 0:5X.