Leaving this thread here for now, but I moved your other two, Angel Heart, as this forum is specifically for Shadowrun Missions, which is the official Living Campaign for the game. As such house rules, game modifications, and SR Anarchy don't really apply, because Missions has a strict set of guidelines for how it needs to be played.
If you want to ask about non-Missions adventures, I'd recommend hitting up the Gamemasters Lounge or the General sub-forum. But there are plenty of tricky and tough Missions adventures as well, so I'm sure folks will have some recommendations here for you.