Aces8 vs. Blitz Shadow Player

In my first game with Aces8 I had forgotten to use the German airpower. In this game I did and while I got deeper into the Allied defenses this time and took an addition 25 VP location the main grouping of VPs was impossible to take out. The string of Allied defenders before this group of objective interdicts the movement of the German forces effectively.

I am not sure how the Germans can get a victory in this game. Maybe it was intended for Solo play - Germans vs. AI-Allies.