wow, you're new, but you're good!
is this your first animation?
also this was a very fluid & fast animation, what FPS did you used? and was this tweens or FBF?
other than that, the story was good, even tho not very original, (but thankfully it wasnt about hank like all the other 8849999 animations do), but it was a good story, with good fights, nonetheless.
i also liked how the madness dudes had speaking bubbles with emoticons/and various expressions going on, it reminded me of maximum ninja, (also the poster) this is good.
in conclusion, this was a great madness movie for a first, and you have great skills in making madness-styled movies.
do more.
PS: just add more original characters, more fights, some backstory, and uhh maybe a preloader for the movie? i liked the ''replay'' button tho, this was good.