"tripping on blood scene followed by the ankle crushing and you will laugh rather than be terrified"
I didn't laugh at all, it was an "Oh, f**k" moment to me, dark slapstick if you want. The room is completely covered in blood there is a creature that has just erupted from a crew members back, A few minutes ago they were having jollies. They don't know anything or what the hell is going on. Her utter panic is completely justified I think. Probably shat herself too is you want to speculate, wouldn't that be amusing? I think some are forgetting that as fans we know what's going on the characters don't have a clue.
Now with that said, their reactions while they were milling around the inside the citadel were rather non existent "There was no, what the hell is this place?
Also, I didn't laugh at the "Fingering" scene that sometimes gets brought up, I'd heard about it before going in and was expecting to, but I didn't. That scene was great actually. If you've ever learned an instrument you sort of get used to the word anyway. It's probably not a word those who laughed at it are used to in the circumstance they were thinking of anyway.