I'm stuck on "The investigation" (step 2 of 3), I play on Steam. It happens when I have to destroy the Hive ghost, the game won't allow me to do it. I though my keys were wrong but I can still do a finisher on the enemy. I don't know what to do..i been having this bug for almost 2 weeks. I'm playing it on the legendary difficult but just in case I also try it it on Classic and the problem is still there. A friend just joined my party to see I he can destroy it, and he did...the thing is I want to play the campaing alone and don't want to bother my friends everytime I have to destroy a ghost... *Sorry for my English