Engine 1 was pumped full of water to shut it down. Possible wiring damage at #2 strut area might have stopped engine shut down.
Only 1 hydraulic system was down. The trailing edge flaps only work hydraulically. The slats work hydraulic or electric. My guess is that the yellow system was still working but the slats were damaged and so didnt move or the slat controller resets were pulled to stop them moving.
Gear free fall worked fine as well by the look of things.
Possible aileron faults as well. It would seem that most of the safety systems airbus designed for this aircraft got a workout today. I didn't see the RAT deployed, maybe they need to save something for another day.