"The Walk" is an all-around solid episode without any notable flaws. The pacing is quick after the initial, with people getting dispatched left and right as Mulder and Scully play catchup, and there are a several fantastic shots, notably the boy getting covered in the sandbox, the woman drowned in the pool, and every shot with the guy who jumped into the boiling water.
But Mulder's final monologue, in addition to Rappo's actions, sums up many monsters on the show and puts an onus on the military's treatment of soldiers, pushing "The Walk" up a little higher. There's a clear distinction that Rappo was a man, but was injured in the line of duty, losing both sets of arms and legs. Somehow, discontentment born out of this, essentially transforming him into a monster. But at the same time he's not a monster who is based on biological needs, but one who is still part-human--and that side of him is devious and cunning. His form is revenge is smart and calculated. He strikes at victims' family, tormenting them into oblivion--similarly transforming them into mere husks, less than human creatures only wishing to die.
Score: 8.8/10