You will start a conversation with Chuck. You can tell him what you want, and also answer what you like to the next question if it comes up. After a while Katjaa will ask you to clean Duck. Look down, pick up the Rug and fulfill her request (Clean: Duck).
If you try to talk to anyone, you will tell everyone that you're going to make Kenny stop the train. Open the Boxcar Door to leave the car, keep going right, open the Cab Door and get inside.
There are three possibilities as the following situation is concerned - you can reassure Kenny, or make him angry and in the latter case, either you'll win with him, or let him win. It is also the third tough decision you'll need to make.
[TOUGH DECISION #3]
- Fighting with Kenny.
- Not fighting with Kenny.
If you choose to fight, the outcome of this tough decision will not be important.
There is also a fourth option if you want to see Duck as a zombie. To do so, go inside the cabin, start a conversation and tell Kenny that his son is feeling very bad ("Duck's just about gone back there."). Then, remain silent through all the replies that will follow until Kenny throws Lee out of the cabin. Watch the cutscene and then try to start the whole thing with Kenny one more time.
Let's start with the peaceful solution. Your next task is to simply choose the correct answers. If at any point you choose a wrong one, Kenny will get upset and you will need to either calm him down, or start fighting with him (the "Calm down." and [Back off] options will reassure Kenny). In general, you should always choose the nicest / least invasive / most polite answer. The next correct answers are:
(1) "I'm sorry, I just want to talk."
(2) "Katjaa needs you."
(3) "I'm sorry."
(4) "This isn't about Duck."
(5) "You think you're the reason Duck got bitten."
(6) "You didn't kill Hershel's son."
If all has gone well, you'll manage to convince Kenny to stop the train (You talked Kenny to stop the train.). If at any time you choose a different answer, calm Kenny down and next time choose a nicer response.
The fastest way to lead to the fight is to show Kenny the bloody rag and then choose two answers - first "Nothing you seem to care about." and then "The same way you cared about Hershel's boy?". It will make Kenny enraged and he will get up. Choose any of the answers except for "Calm down." or [Back off]. Then select the answer that suggests the fight ("Yeah, I do.").
When the fight begins, again you'll have a choice. You can simply not defend yourself and let Kenny beat you. Once he's done, he will remember that and stop the train (Kenny will remember that.). The injuries and wounds you've sustained will "stay" with you till until the end of the episode. But if you want to fight with Kenny, first quickly block his left Fist. If you don't manage to do it or you want to let Kenny win, you'll get a few hits, and then you'll have an opportunity to block his Fist again.
If you want to fight, after blocking a blow keep pressing the button shown on the screen. Then repeat these two steps - block Kenny's right Fist and then press the button shown on the screen. Finally, you will knock some sense into Kenny and the train will be stopped (You knocked some sense into Kenny.).
It does not matter what you will answer to the first question, but take the next one into consideration. This is when you're making the decision.
1. "Well... fuck... just... who then? You want me to?"
(1): Katjaa should do it.
Saying that Katjaa should do it. Katjaa will agree.
(2): Kenny should do it.
Saying that Kenny should do it. Kenny will agree with you.
(3): I'll do it.
They will remember that.
Katjaa will do it.
In the case of options (1), (2) and (4) you will be able to reassure Kenny by putting a hand on his shoulder (by starting a conversation Talk To: Kenny) (Kenny will remember your compassion.). You can also just remain silent.
Answer what you want to the first question, and then anything to the next one (Clementine will remember your honesty.). If, however, you keep silent in the second question, Clementine will be very upset. Next, answer to one more question asked by Clementine. Finally, Kenny and Lee will go to Katjaa.
Duck is alive, but he's dying whereas Katjaa has committed suicide. Reply what you want in the first dialogue. You must choose a solution to the situation. Now you'll need to make the fourth tough decision in this episode.