Few questions concerning special mission

Hey all,


I playing now through Sentinels for the third time in a row - and still enjoying it
There's somethin I'm wondering about though:
I read something about a special random encounter in Egypt with a lot of PKs and the Hammer sattelite from S² crashed. Can anyone tell me where exactly it is on the map? I'm playing with hidden REs, so I can't seem to find it.
Next question is about the "shade mission" in Switzerland... same problem as above, I can't find it.

Another thing is the robot facility in poland I heared something about, and that you have to take certain missions and find some clues. I did the mission in the mine and found the encoded message, also the finnish border mission where I talked to the guy escorted by Hammer, and now the Valhalla mission (that is the mission where you have to get into the building of a company of Hammer in Switzerland, is it?), found the code book, still no mission appeared on the poland screen.
I did the phone call in the valhalla mission to lure away the cops, and before this mission I did the one in the egyptian ruins if that matters.
Is there something I did wrong or still have to do?

Oh, and I searched the forum about these topics but couldn't find something really useful, so I hope you can help me.

TIA