The adaptive difficulty definitely worked for me, as I didn't notice it, and I think overall I handled the game pretty well. :)
As for the camera, I'm just not sure. Is it supposed to add difficulty or is it for the sake of style? If it's the latter, I think it's fine. If it's the former, I just don't think it's the best way to increase difficulty, what I mean is there should be more suitable ways to do so. Take it with a grain of sault as I'm not that experienced and it's very subjective on my side.