so...
i'm going to write this in english, as i'm completely language-confused at the moment...
the lower picture: take the top of the scratches off using some bodyshop material and a stiff cloth. There's some stuff out there for 1200-sanded panels (i have some from auto glym, form 03B and 02B, 04 is even coarser) - and then you'll see just how bad the damage really is.
I don't see you're going to get round re-painting the door, unless you try the same thing and are _really_ good with your lackstift. Maybe an airbrusher could do something, but you'll be at about the same price, i think. call it €250. the other stuff could then also be done for a minimal extra. Probably, depends on the lackierer.
Bret