Factual error: In 'Escaping the Prison', the description for the Opacitator says that it will turn you opaque, allowing you to pass through walls. 2 problems. First, opaque is the opposite of transparent (see through), despite what the description claims. Also, the transparency of objects only affect how much light passes through them, it doesn't affect any other physics (a glass can't go through walls just because it is transparent). Even if the device did make objects opaque, it would not affect any physics or have any effect on Henry.
Suggested correction: The word "opaque" is indeed used incorrectly (there is an achievement you can get called "It's a joke..." by clicking on the word "opaque"), but the Opacitator specifically states, "The more opaque (see through) you get, the easier it will be for you to pass through solid objects." This is just how this specific device works. Not all transparent things can pass through objects, just the person that the Opacitator makes transparent.