2. Doing a series of assassination missions in Leicester (it would be a tragedy if completed ahead of schedule).

3. After completing a specific assassination mission, there will be a corresponding stock price decline. Seize this opportunity and buy all the money in this stock.

4. After waiting for a period of time (about three or four times), the stock price will return to its original value and then all will be sold.

There are many specific assassination tasks and corresponding stocks on the Internet, so I won't go into details. If you stand alone, there should be three stocks that can operate like this. But after the gold grab is completed, the game will soon be over, and no amount of money is meaningful.