Okay, The idea was great, but there is somethings that you need to make this game more better:
Mouse: It needs to turn the player more, like if you Move the mouse to the left, let the character turn left, and if he don't take out the mouse in the place, Make him Spin ;D
Graphic Debug: You must try to make graphic don't being Glitched.
More Tilesets: You must try to make more Tilesets, it becomes confuse seing the same Tileset in the Everywere...
Okay that is my suggestion, But the thing that i don't know how you did that is the Youtube Tileset Wall, I always thinked that is impossible, congratulations in this side...

I played this game Years ago, Dat Duck! lol

Okay, very nice History, the only problem is that music is very calm, so, my first impression is something about scary game, but it wasn't i even take out my headphone, I think that what you can fix Is the Fade in Of the Dog's image, and please, Fix the volume icon, it disappears when the screen is going dark :/