I have made several games already, but usually I'm more of a designer/writer than an actual programmer or art guy. One of the reasons I wanted to make a game jam was to polish a bit those skills, since I tend to forget them.
Thankfully, I'm think I can defend myself in the programming area, but art and animation... nope, those were a nightmare.
If you play my game you'll see that the character basically has an idle animation and a movement one, since jumping is just one frame: at the beggining I thought about having one when you posess a body, another for when you die, etc., but only those two animations took me HOURS.
I am happy with the result, since I think they have a certain charm, but yeah, animation was my biggest hell.