Its ok
but not that ok. it could use some background music in the parts when he's assasinating the characters and it would be good if you designed your own backgrounds. Voice acting would make this also alot better. The idea for the animation was an extreemly good one though. If you try practicing a little art and voice acting you could make this animation amazing.
happy animating
P.S: you can use certain programes to edit voices to make them diffrent (e.g changing pitch or speed)