I find myself frequently needing to scale down cliffs. One can do this by walking horizontally along cliff faces, inching your way down from ledge to ledge - the Courier can stand on near-vertical cliff faces without sliding off, probably some kind of oversight, but useful. This gave me the idea of finding climbing equipment, like the Ropes from the STUN mod, maybe something to stake them with, and turning them into consumables which can be used to rappel safely down a cliff face or off the top of a building, one time each. Naturally, if you get shot or attacked by a Cazador or something while rappeling, you ragdoll and fall the remaining distance, taking whatever damage that would normally inflict. Maybe toss a Strength or Endurance check in there to see if you hold on, factor something like that into how quickly you can descend. Hit the jump key to push away from the cliff and drop faster. Another option for letting go of the rope and dropping the remaining distance, attempting to land naturally. Maybe even stop-to-shoot, but have to remain stationary if you do that until you make it all the way down. I'm a GECK noob, and in any case this would likely require some animation work. Thought I'd toss the idea out there in case anyone else is familiar with "cliffing" their way into valleys instead of taking a roundabout route.