I did it .
HAAAX
Heh, Something like this just happened here on Blockland. I was making a wall while zombies were passing bye. I was about to put the last brick in, when a Tank jumps through the hole and yells "AAAAARRRRRGGGGGHHH!!!!!". I jumped a bit. Startled me.
Headcrabs are people, too :(
I think I may have something a bit wrong with me. Killing Floor wasn't scary in the slightest but HL2 and STALKER ave both almost made me stuff myself. The latter more than the former.
I don't think Killing Floor was actually made to be scary, the atmosphere just makes me extremely paranoid, nervous and jumpy when I'm the last one alive on the last 3 rounds :V
Did you literally stuff your pants?