mossberg590

Those types people climb are much larger in diameter. The thinner the rope the more difficult to hold onto it.

1. Braided, not twisted.
2. Manila not hemp.
3. Go ahead and try to climb that rope with bare hands.

NPCs shouldn't be fully fledged out characters. They are many to be encouragement for the party to improv/ roleplay. If they are hard coded with weakness or aspirations you can't adapt as the DM/GM. If this is a plot centered NPC such as a patron or BBEG, sure.

The most memorable NPCs either work as a foil for humor or cause a split in the parties loyalties/morality. Too do those things, you need to adapt to a moment.