I played with controller. The game is very interesting.
I like this idea of a sort of half free movement, half rail shooter.
But not being able to move the camera in a meaningful way is annoying. I feel like both hands could be controlled with one stick and the camera with the other. I never really felt the use for both hands. I also never really knew when I was close enough to a victim to get them.
I also found my self dying often from not knowing where another victim was. Sometimes i died before I found my first victim. The positioning of the victims is easily the most frustrating part.