I just played a game where we had to climb down a hole that's about 40+feet down. Now we had five people hold some rope (grappling it) I descended down the hole as they held it in place. They rolled a strength check and failed letting me drop. Now after I took the proper damage they tried 4 people and other guy and basically the same thing happened. The DC is weird. The DM had it so it was 15 then as each person went it increased by 2. This seemed to high.
So what am I asking? What is a good way of having some PC's descend down a hole in a cave using rope. Meaning what kind of checks should be used and so on.
I would really love a lot of responses and if you need more details please ask.
Im just trying to find a way of using rope like that that can be in an consistent manner. A DC that can be used across the board with negatives or what have you. thanks