Default Blitz Brigade (and others) remapping controls

I guess this is more of a general Q for games that are supporting Shield compatibility. In Blitz Brigade for example everything works flawless with the Shield. However there is nothing in the options to rebind, and no OSD for me to drop Gamepad Mapper. Is there some super cereal app that can complement the shields key bindings?
My funtroller is running 4.4.2 and lacking its roots.