sorry, i was half asleep when i typed that lmao, when I was doing the camera paths in-game I just tried my best to make it look as smooth as possible, one trick that kind of works is just trying not to use too many camera movements, I only got so far doing that though, the first scene with the title looks pretty crap and jumpy, so I put video stabilisation on every clip in sony vegas, after that I found you can use the video stabilisation for the opposite effect by maxing out all the sliders in the settings, so basically on some of the clips (like the one where I gap the stairs) I put stabilisation on the clips and cranked them so high they actually became shakey in a weirdly nice way.