I've tried to find any vibration options on main menu but didn't find anything. I think that this game is gamepad-oriented :)
So, does anyone know, is it possible to turn the vibration on? :)

Sadly, I haven't managed to activate vibrations either. It appears that the game does not support it, which is a bit strange...

[url=http://logitech-en-amr.custhelp.com/app/answers/detail/a_id/2690/~/pc-game-faq---psychonauts%E2%84%A2]logitech help page which says the game does not support rumble effects[/url]