I haven't played this, but reports are in that it is very difficult due to the monstrous undulations in the fairways (10 - 15 feet) and the "dunes" are about 30 feet. Lots of blind shots, apparently, and the highest greenfee in Germany (120 Euros). It just won "best new course" in Germany.
Greens are slow, which is to be expected for a new course of this type. Was the same thing at my home course, which is a "light-version" of this design style and the greens are coming along nicely in the third or fourth season. Obviously, the mounds overgrow with time, which improves the scenery somewhat. But it's never going to look natural.
Ulrich