agiar2000 posted a neat video of what happens at the end of the TrainSim in Wing Commander 1. Everyone plays at least one short-lived round just prior to Enyo 1, but a lot of pilots never go back. There's a high score board you can place on, but you can also get to the end after four missions. Running through them all nets a score of more than one million points, which would put someone in first place with plenty of room to spare!
The clip should start at 9:30 so you can see the happy conclusion.
Did you know that it is possible to win in the training simulator in the 1990 DOS game "Wing Commander"? I didn't until I accomplished it. I only recorded the last 10 minutes because I was using a 10-minute "instant replay" recording feature that constantly records a rolling 10-minutes.