What level is it? in later levels the soldiers have a high tolerance for impact and will simply fall unconscious, and it may be that you just aren't hitting them hard enough.

引用自 synthrax：

What level is it? in later levels the soldiers have a high tolerance for impact and will simply fall unconscious, and it may be that you just aren't hitting them hard enough.

that happened in every level

I think I remember there being a bug like that once that was caused by not having the NpcNames folder or the text files in it, or something like that, have you tried reinstalling the game?

The soldiers may not be dying because you're not useing the right stuff, try using blades, cannons, for and other of the things in the weaponry section