From there, I looked at/took everything I could. Closed the shutters. Used the computer to jack in to the Matrix, tripped the alarm and killed all the IC's inside. Then some security showed up in meat space despite supposedly being locked out by the shutters. Blasted them. The Russian dude said "we have killed all the security on this floor but they will send reinforcements" or something.
Proceed to another computer and open the main lab doors. Step inside, meet team of random Shadowrunners and agree to cooperate. Poison gas is released and security team spawned, I quickly jack in and disable all 3 vents. Then walk back into the lab to grab the prototype, while holding off a neverending assault of about a zillion other guards. When my char gets to the middle of the room, a wild explosion appears and the team starts talking about "there must be another team of shadowrunners around". You mean like the 4 guys we just met? The guys dodging the bullets and shooting back at the army of Knights Errants? YES THERE'S ANOTHER FUCKING TEAM AROUND.
Suddenly the other team who had been helping me deal with the Zerg rush up to this point vanishes and reappears on the other side of the lab in what looks like a boardroom. But the doors are locked and now they can't reach me. There is no way to open the doors. In the Matrix there is an unmarked terminal you can interact with but doing so just shows a message: ALERT ACTIVE, ACTIVE ALERTS TAKE PRIORITY OVER REGULAR SCHEDULES or some shit. The stairs I used to get up are no longer clickable. There's also an elevator control option which does nothing, probably because I fried the wiring downstairs with a drone, who knows.
So now I can't get out, there's no way to accomplish the last 2 objectives (Find repair unit and Find safe key), believe me there's nothing to click on anymore. And no way to get to or interact with my new "friends", and a constant stream of guards coming out of the goddamn walls.