1: Locate the file containing the controls settings. This can be found in: Steam>steamapps>common>GoatSimulator>GoatGame>Config>Defaultinput.ini.

2: Open the file with your favorite text editor. Windows' default Notepad program works fine, but downloadable editors like Notepad++ make it easier to read.

3: Scroll down to the section beginning with the line ; --- Goat bindings. The sixteen lines between ; --- Goat bindings and ;GAMEPAD BINDINGS are the lines you want to change.

4: Now you need to determine the names of the buttons you want to use. To find out a button's name, simply set that button to a control in the game's Key Bindings menu. The button's name is shown next to the control. For instance, the "Headbutt" control is set to the button named "LeftMouseButton" by default.

5: Go back to the window containing the controls settings file, the one with the ; --- Goat bindings section. The sixteen options below ; --- Goat bindings should all contain the following words:

.Bindings=(Name="[Key Name Here]",Command="[Command Name Here]")

For example, the first option is:

.Bindings=(Name="W",Command="GBA_Forward")

Find the control you want to change by looking at the word after Command=, and change the key name after Name= to the key name you found earlier. Capitalization doesn't matter, but make there the " " marks are still there, around the key's name.

Now just save the file, start the game and your controls should be changed permanantly.


Additional Notes

• I've seen some people solve this problem by exiting the game after changing the settings, however, this solution is unreliable and doesn't work for all settings. Some settings won't stick, some won't change at all.
  
  
• Some keys, such as the side buttons on a mouse, have a name that's too long to fit in the controls menu. List of buttons known to do this:
  - Side buttons on a logitech mouse - ThumbMouseButton, ThumbMouseButton2