First, the possibility of a simultaneous failure of both engines on a twin for unrelated reasons is highly unlikely, double bird ingestion or fuel starvation are the most likely but the odds are millions to one, e.g. US Air down in the Hudson v. how many others?
In the daytime the pilot would try to pick a flat area, possibly put the wheels down to absorb some of the impact. At night would be more difficult, go talk to a bookmaker and assess the odds, he will reassure you!