The player has to worry about hunger and thirst, which increases with the passage of time, he has to sleep and go to the toilet.
Social connections, good health, tasty food, and engaging in meaningful activities are key contributors to happiness.
Manage your stats and upgrade skills to survive and escape to better life.
What you eat, and how often, doesn't disappear. Keep overeating over time and your character gradually gains weight; go too long without food and they gradually waste away. There's no instant reset! Your body changes at the pace real consumption would, and it stays that way until your habits change too.
Get into a fight and take a hit, and it doesn't just fade with the next scene. Bruises, cuts, and wounds stay visible on your character after combat. Leave them untreated too long, and they can develop into inflammation or infection — permanent damage to your appearance if you never make it to a hospital.
Every stat, attribute, effect, and skill in Liberate reacts to how you actually play. Health, hygiene, stress, and fear shift with your choices, visible effects like bruises or dirty hands layer on top of whatever just happened to you, and skills from bribery to combat grow the more you use them.