What happened at end?

They all died :(

You didn't miss much. The worst part of the movie by far. Ridiculous.

They blew up the metal plate over the coupling, released the knuckles, and broke the last carriage free. The old man fell off the train and died when the carriages shook and separated.

Lewis was stuck on the wrong side, but his kid, the hot chick, and the Polish guy were in the last car. They stopped the last car using the hand brake.

As the train rolled toward certain doom, the train fuel ignited and the whole thing blew up. Lewis jumped out of the back of the train at the last second. He was beat up pretty badly, but he survived.

The kid, the hot chick, and Polish guy all huddled around him and took a sigh of relief that they survived.

The end.