Godmode would mean you would feel pain. Forever. Even getting tortured, waterboarded, branded on the neck and getting your neck slashed wouldnt kill you. You'll just live without breathing and feel pain whenever you move your neck.
This could create a supersoldier if they have that rare condition where they cant feel pain. No armor needed or anything, just send them out with a gun and alot of bullets and let them tear the place up.
godmode means you aren't able to take damage/be debilitated. if you still took debilitating pain, it isn't godmode
+ some games do godmode by having every attack phase thru the godded
