The level design in One is splendid, making good use of spatial relationships, object interaction, lighting, textures... all that. Suffice it to say that One is beautiful to look at from any angle.
While I found the camera angles in One to be well placed overall, I seem to think that some of the game’s acute problems stem from a lack of a tighter zoom feature. Jumping in One, which is a major aspect of the gameplay, can be as easy as one (run), two (press jump), and three (land). On the other hand, when levels become more serpentine in nature, especially at junctures requiring good jumping skills, One can become “one” frustrating game. John Cain does have a shadow of sorts to use in aiming landing points, but with the intense on-screen action, and incredible lighting effects, the shadow can become washed out, and therefore, undetectable. If the camera would allow you to zoom in closer to the action, the advent of the occasional absences of the shadow would be balanced out by the ability to “see” your way through areas.