Wolfenstein "The Old Blood" once through the whole process. Normally, it takes on the simple level of difficulty not cheat, but who nevertheless required on the PC can probably use the same codes as in Wolfenstein: The New Order:
To enter the cheat codes you open the first game in the developer console with the key combination "ALT + CTRL + left ^", then type in one of the following codes and then confirmed the whole thing with the Enter key:
cvarAdd g_permaGodMode 1 = Invincible (God Mode)
cvarAdd g_permaInfiniteAmmo 1 = Unlimited Ammo
Just again "ALT + CTRL + left ^" Enter to close the developer console again.
Do you want to turn the cheats again, then give the following:
cvarAdd g_permaGodMode -1
cvarAdd g_permaInfiniteAmmo -1
Nevertheless, you should die once (for example, you accidentally jumped into an abyss since, then just on the last checkpoint restart).