Using 3d software to make sprites like that is kind of like taking a priceless greek statue and then whacking it with a hammer until it is a roughly statue shaped block of stone.
Interesting comments, the kind of 8 bit style I wanna make is like Pitfall, or a bit of more resolution (just a bit):
Should I do all the draw manually? Or may I use a 3d software to generate sprites?
I shouldn't really need to say that art like that should just be a bitmap.