Hmmmm...not so good.
It's alright for a sprite movie,but a few things are wrong with it.
Bland and terrible storyline,why Mario,scratch that,any Mario character be in Sonic's world?. -2
Sprite mixing ftl -1
Terrible ending,in fact both endings have the same attack,in fact,they couldn't even get KO from an attack like those.-4
The music is good,mainly the Sonic VS Blaze boss fight.
But,I will give you a extra point for the hammer comedy.
Work on it some more.Also,I will say this,the fighting WAS sort of slow.