Happiness Kills

Eric is severely depressed and a little mad. His recent break up has him in worse conditions. All he wants is to be reunited with his mother that died when he was just a small child. he has not felt happy ever since she left. He thinks suicide is the way, until he meets a mysterious being that has an offer for him and it guarantees his wish comes true. But how is the murder of 13 people the way to do it?