Guild Wars 2

I know this is probably a bug but it is really funny so please leave it. It happens when you are doing the first storyline.

You head to go rescue the captives. You head down a hill through a tunnel sort of area. The NPCs randomly fall down the hill and face plant. It is random which one falls and where.

In this video 2 of them fall and the Asura actually dies from the falling damage. There were no mobs, we were not being attacked, they simply tripped and fell. I am thinking that it is unintentional, a bug, because it is so random. If you listen at the :11 mark you can actually hear the sound that someone makes when they fall, sort of an umphf sound?

Also when you are coming back after rescuing the captives you run down another hill and they sometimes fall down it also.

https://youtu.be/_bB7bNpwJV4