Not a bad start. You have an interesting concept of an "outsider's glimpse" of the human experience. It was short, however. I believe you would do well for yourself to dedicate some more time and develop this as a struggle to conceive of an utterly human experience by someone otherwise entirely incapable of it.
Death could follow this start with some of his observations over the years, mostly of people along his journeys. He could suggest that the original description is somehow inaccurate, since all the thoughts had to exist, and at the pinnacle moments of fear he'd observed (say in people he was "picking up") they were absolutely still, as without a single thought in their minds. Or something...
Let him develop his own concept of what fear could be, and how it might feel to be afraid. Or you could even suggest that he's picked up souls around sexual encounters, and found some reasonable similarity between those frozen in fear at seeing him, and those in near lifeless ecstasy just after the act and slightly before they'd realized he was there at all... So maybe construct a punchline that fear isn't too much different from the height of sexual pleasure... and maybe he thinks he's really doing people a favor... (lolz)
In any case, you have a great starting place, but I honestly think you'd be well advised to flesh it out. Otherwise, in the technical sense, everything worked well. Animation was fluid and consistent. Sound sync'ed up well, and the voice work was clear, distinctly in character, and maintained its consistency throughout.
So don't forget to breathe, relax, and keep on keeping on... if you don't flesh it out now, revisit...