Unfulfilling generally.
I liked the bit where you cut away to 'sonic is angreh' as well as pointing out the stupidity of the rescue and the trip. Also, Tails' speech was kinda funny.
I couldn't understand the walrus at all in the beginning. Hehehe... kukukchu.
My main gripe with this is that whilst bits of it made me smile or faintly chuckle a lot of it was just kinda vacuous, boring, predictable and unfulfilling.
Sure, these are all complaints I could level at the original cartoon probably, but maybe you could have deviated a bit more, done some video editing, cutting out bits, gone off on more tangents...