Of course the engines run. As they do in a Seneca.
But all computers are lost, after batteries are depleted, and therefore you are in mechanical backup, with rudder and THS hand wheel. Try to land like that with no flaps no slats...
suggested procedure:
1- pray to god in all possible ways (christian, muslim, jewish...)
2- if you have fuel, try to learn to fly that way for a while
3- find a looooong runway with no crosswind
4- prepare the go around
5- consider changing the CG (without causing pax panic)
6- pray again and do the approach. good luck!