generally speaking the standby electrics should allow the pilot to perform an instrument approach at night in instrument conditions.
I would believe that the landing gear indications and actuation would properly work. ( also, I think that the alternate extension is an electric motor which pulls a cable to unlock the uplocks and allow gravity to do the rest)
I think even the pitot tubes/static system would have proper de/anti ice.
I'm sure there are some 744 guys out there who would be even more specific.