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I seem to remember this problem a few years ago but in the pit with the face that fires at you I can't climb back out as when you grab the rope he just lets go again straight away.

Any fix for this?
Figured it out. FFR - Sometimes the rope you climb in on doesn't let you climb out again apparently and is a known bug, the solution is to fire another arrow and use that.

However I tried that and it didn't work but restarting the game did fix the issue!