I feel for you guys. I spent like 2 hours ripping my hair getting the turret to correctly export. I in the end have concluded what is standard for Blender will not easily work for exportation to the engine; without some finagling, force, and frustration.
However, once things are clarified, and we know what not to do then perhaps things will have far less surprises and mysteries.
Have you read the exporting guide I wrote? Is there anything that is lacking from there? (I'm sure there is).
@ViruS: I didn't get your point. Do you want me to create a new animation or to fix current? In tremulous, IIRC, there was only one death animation and human always falls down head first, right. I just made it a little bit more dramatic :)
@all: I can make it shorter - without standing on one knee. Or make a new one, if you guys don't like this at all. Just give me some feedback so i could understand what would you like to see.