The Materials was actually just a Free Model material pack that I have enjoyed since release (and used it for a lot of my games)
You can find the material pack here
The camera system is using @boatbomber ViewportFrame Handler. Basically all it does is sync the CFrame of actual objects in game with a set Frames Per Second (Moving objects like doors, or stuff that changes colors is rendered at 30 FPS. And static is rendered 0, while players are rendered 60.). You can simply make your own but boatbombers is pretty nice as is.