At first, I wanted to train myself in character animations. But I didn't feel like working on a simple character without any background.
As I also aimed to present a 2D action game concept at work, I started to work on characters (there are five of them) environnements, story, and even HUD :D
And so I animated everything... background elements, interface, fx and finally... characters :D
The animations in this quick sequence are stand, walk and first attack