Trainer options
F1 - Infinite Cash
F2 - Infinite Coal
F3 - Infinite Train Health
F4 - Infinite Health
F5 - Max Stats 

Notice:

Before using Cash cheat buy something then activate it then buy something again
Before using Coal cheat move the train then activate it
Before using Train HP cheat enter a fight
Before Using workers hp cheat enter a fight
Open character status window for any character then activate the chest then close the window then open it again