With SUPERHOT the game would change the save file during the game so people were able to make an auto-splitter that would detect when the level changed. Looking into the registry keys, there is FinalBossBeat, MiniBossBeat for each boss, and UpgradeBot for each drone, so it is definitely possible to do something similar. That would also let us all be able to end the run at the same point so our only issue would be starting. We could just time on our own and then re-time the start point after the run so it is when the hatch door opens as Ian said.

I'll look into how we could use those registry keys and see if I can whip up something.