I've crossed the "Hallway of Death" on Easy with the help of an additional controller.
It's very, very easy, you don't need Sprint and there's nothing after it - only the continuation of the 10-seconds countdown to death.
How it's done:
1. Have the first controller/person commit suicide (just fall to oblivion).
2. Have the second controller run (or walk) along the Hallway. The first controller will want to respawn next to the second, but it can't because the second is in a Danger Zone. It doesn't matter, though, because as soon as the second controller dies because of the countdown, the first respawns where the second was.
3. The first controller continues walking along the path and bam!, it's done (if you go without Sprint you'd only need a couple more seconds to cross the Hallway).
Bleep Bloop.