O Unity tem Keycode do IntlBackslash (\|), IntlRo (/?) e o NumpadComma (.)? https://docs.unity3d.com/ScriptReference/KeyCode.html
O unity tem o KeyCode.KeypadEquals (=), teria desses três?
Qual a Convenção de nomes no Input Manager? https://docs.unity3d.com/Manual/class-InputManager.html
Barra invertida, do lado do Z
keyCode/which = 226
key = \
code = IntlBackslash
KeyCode/Input.GetKey: ???
Input Manager: ???
character: ???
Barra, do lado do Shift direito
keyCode/which = 193
key = /
code = IntlRo
KeyCode/Input.GetKey: ???
Input Manager: ???
character: ???
Ponto, do Teclado numérico
keyCode/which = 194
key = .
code = NumpadComma
KeyCode/Input.GetKey: ???
Input Manager: ???
character: ???