what happens when a person suffers serious salt overdose?

For my capoeira class I am preparing a piece on one of the most infamous Brazilian outlaws. The man was known in several cases to kill people by forcing them to eat a kilo (about 2 lbs) of salt. I'm actually curious of what would physically happen to a person when subjected to this type of punishment. I imagine stuff like dehydration kidney failure up to cardiac arrest etc. But frankly have no real idea. I do however doubt that any one could finish 'the meal' but coud any one provide me with more info