So, Downtown Berlin.

[nuklhed808]

Heres the deal. I was stuck on that mission for hours just like you, ready to throw my controller through the TV, when I decided to take a break. I went to the tutorial missions and flew all of those, and unlocked the "simulator mode". I then went back to that silly Downtown Berlin deal, flew it in the simulator cockpit, didnt hit a single ac, and before I could say STURMOVIK, the "mission complete" was staring at me and the HE-162 was unlocked. Go figure...