I would ask if there was a way to completely lock down the value for HP, the tables provided here won't lock on and it changes at the start of every mission, but then I found out HP dropping to zero isn't the only way to lose. I just got to the mansion, killed all the zombies in the entry area, and ran around for a bit trying to figure out what the giant crystal with the Patreon link was. Then came the rumbling footsteps of the guy that did me in. It turns out that, should you fail the QTE to get out of a hold, it is an automatic game over and the fat zombie's QTE is much worse than the normal ones. If I wanted to lose, I wouldn't have cheated my HP, I would just allow my health to drop.