For those who stumble here after it's no longer the latest comic... this is in response to Unwinnable.
Didn't one of the Halo games introduce a system where if you failed to survive ~30 seconds after loading a checkpoint 5 times in a row, it reverted to the previous checkpoint?
This is a legitimate question. I haven't played anything besides Rock Band in nearly a year, so my memory is a bit fuzzy... but I do seem to remember at least one of the shooters I used to play had a system like that, and Halo was the one I played most.