How do I create a slope, and how do I best compact it?

Ah, so I finally have a visual idea. Why does it actually have to be exactly 42 m?

Because we would have to go all the way to the back. You can make it out in the picture, where there is still weed on the slope and the pipe is sticking out.

Since I am actually not supposed to do such heavy work anymore, my husband decided to get a small excavator to at least spread the earth.