alright i've managed to get invincibility (not invisibility) to work. in the Offline folder, edit ThirdEchelonUser.ini. almost all the way at the bottom, you'll see a few joystick layout lines. Use those. it's layed out like this:
;Button Name
Button Position = Button Function
for example
the first part of the button name line is the PS2 layout afaik, and the 2nd is the xbox layout. you can see the button function there.
I did this using the duck button as a test.
change
to
CODE |
Circle, B Joy2=Invincible |
I got the Invincible button function from looking at the keyboard layout part of thirdechelonuser.ini. reupload thirdechelonuser.ini to the directory, clear the cache (not sure if this is necessary, but i do it just in case), load up a game, and try using the B button to toggle invinicibility. there is no visual confirmation if it works, so just go near an enemy. if they shoot you and your controller vibrates, it means invinicibility is off. if it doesn't vibrate, invincibility is on and your health shouldn't be going down. i'll test this with other functions later. For now, though, have fun.