1.[Run the game in CONSOLE mode].
2.When you are in character selection screen.
3.Take the pointer to Billy and stay for 5 seconds.
4.Then take the pointer to Marian and stay for 5 seconds.
5.Then take the pointer to Chang fu and stay for 5 seconds.
6.Then take the pointer to Jimmy and stay for 5 seconds.
7.You will hear a bingo sound and the bosses appears.
8.Select them.