I managed to manipulate hunger meters with cheat engine, but when trying to do the same with in-game timer, it either wasn't working or just kept crashing the game.
"Cheat Engine" is the name of a software used to manipulate memory values. It's too long to explain basics, so you'll have figure them out yourself. I can only hint what type and value you should find: "float" type, around 500 to 1000 depending on a character.
To be honest, I wasn't having any troubles with completing the game as intended due to timer, maybe once against 2 predators on nightmare mode. I was just doing stuff aside from escaping, so 24 minute time limit stands in the way.
