Okay.. push by the slums guard, sleep at cassie's house, go through the slums preferably through sewers and I think it's assassin work you do. Inform cassie then sleep again at her house. Gain fawn, lin lin, sammy, and arline. And also beside the don's place is the sleeping area go there and don't get scammed if you do he's at gentlemen's club and then save before attempting to save Cassie because if you fail it's a bad ending. All I can say if you need help just ask.