I have improved it 20 seconds,and I use only one tool-FCEU.
In the stage4,I take advantage of two Bug on the floor,and I improve other datails,especially BOSS.
In the stage5-2,I go to die on purpose after using Billy.
I must thank "Phil Côté",because his movie is so good.
I must thank "adelikat",because he let me know how fast I can do.
I must thank "FC expert(平机专家)"who is a Chinese boy,becasue he told me some details which I can improve.
adelikat: Nice improvement. Accepting for publication.
adelikat: Processing...