This was really funny. I truly appreciate how the animation is so nice. It seems to contrast well with the humor of the cartoon. You really aren't expecting that tone. The action scenes themselves are quite nicely done. I just love seeing the Grim Reaper like that.
It's great to have so much stuff going on. The jokes have a wide variety to them. The voices are all appropriate and really funny. I even like that song at the end. Everything is quite unexpected.