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Is this game first person only, or can it be played in third person?

I love the look of this and Outlast 2, but prefer to play in third person as first at any level of speed makes me ill. I suspect there's a fair amount of running in both these games!
First person was definitely the intended perspective (unfortunate for those like yourself as it is).

There is this for the first game - video shows a bit of it (around the 3 minute mark, if you just want to see how it looks in action):

It's likely not what you're hoping it to be though (it's more of a free camera movement mod), but the user who uploaded the tutorial video has other videos that show off other portions of the game with it in place as well.