CR 5 or CR 10?
CR 5, probably, anything with constant healing, even as much as I dislike to call anything that sets off a bunch of alarms a win. The Rogue has a much higher search than that Factotum, seeing as he puts ranks in it, and that helps on the CR 5 front significantly.
CR 10, teleport is something, the other thing is that if you were building a rogue or factotum, you might want to get an item of + to search, and then avoid it/bypass it/solve it, but I'm not going to give credit to a Factotum that doesn't even put ranks in search for beating it. But if you actually want to beat a hallway like this, you want to a) be able to detect the symbols before they trigger on you, because the first on could be a symbol of death, b) once you know the symbols are there you get into really tricky arguments about ways to disable them without going within 60ft, and if those ways can be done without a disable device check.