you can do pixel art 2d?
That depends...:
1)what is the actual intended size the sprite is shown in? (I suppose the one in your gif is enlarged a few times?)
2)do you only need character gfx (and animation)? Or also (larger) objects and/or locations?
"1" is the more important, here; I mean if you use a set pallette then it isn't hard to have rendered gfx look very similar to those made pixel by pixel from the start, but I will need to know the reply to "1" and "2" :)