Red I know a lot of time an effort was put into this, I can really tell and on that I salute you. modeling, rigging, texturing, lighting, then animated everything is an enormous feat to take on by yourself.
Everything about the story is clear. You can make a quick connection that whoever we're about to meet is depressed simply by the mess in the room and music. T
he character himself is pretty well done. the emotion is a bit hard to express on a character with a few features as he has but you did a pretty good job. I can appreciate the detail in the ear twitching and what-not. There's just something about his over-all movement that irk's me a bit. It feels... "floaty". he feels like he's missing some weight. I'm working on some of that stuff myself when animating character and sometimes it's a bit rough. The stumbles I think is where is feels most noticeable, but it's still not that bad. When he falls to his knees he pulls back both his back legs at the same time. when we naturally fall to our knees we would stumble one leg at a time, so delaying them there would give it a much more realistic feel. Movements like this are best acted out in front of a camera so you can play it back over and over letting you study it. (I actually got up and tried to fall to my knee pulling both legs back at the same time to make sure I wasn't bullshitting you :P)
some smaller details that I noticed:
The bottle feels like it's glued to his hand when he drops it, it doesn't move until the very last finger releases it.
His hand, when it resets on the arm of the couch right before he pulls the gun up collides with it and moves threw it. Remember that when you're aiming up a shot, all you have to worry about is how it looks to the camera that it's going to be rendered in. if it's actually not touching the couch it's alright as long as it looks like it is to the audience. that's the easiest way I deal with things like that.
anyway, great little short! keep it up, and the best advice I can give you when it comes to 3D animating is don't be too shy to act out your scenes yourself and film it. It gives you really great reference video.