Well, alright!
I didn't really feel the explosion sounds, but the overall concept was sweet and subtle and gave it a 5 because of it. It was short, but you wanted to know what was going to happen. Work on using other sounds to set the tone better, to go more with the tone of the film, and your animation.
You used text for the dialog, but that went just fine with the subtley of the film. Good job. Keep it going.