The concept was pretty great and i liked the voice acting too. You should have a preloader and a play buttona t the start and the tweened title in the default font scrolling by at a low frame rat leaves a bad first impression. Seeing as the whole animation is just tweens there is no need to have a low frame rate. It would have been nice to have some fbf or some lip synching because the animation was pretty sloppy and static.
The art too was pretty messy. I really liked the colours and compositions of some of the shots but the character designs were way very plain and everything was far too simplistic. The whole thing looked kinda rushed. The shots of the door handles (?) were quite interesting in terms of cinematography but i could barely tell what they were because you spent so little time drawing them! An "END" screen would have been good and satisfying and having the animation automatically loop is annoying. I think if you spent a little more time on the animating and drawing you could produce something really nice. But this isn't too bad really.