Your hit points determine how much damage you can take before you succumb to the long dirt nap. The more hit points you have, the longer you can survive outside. The less hit points you have, the more healing you will need to do. The number of hit points you have will grow when your character earns experience and advances in levels. The number of hit points are displayed as current/maximum. If you ever get to 1/30 hit points, for example, you need some serious medical attention. And soon, brother.

Initial Level: Starting hit points are equal to 15 + (2 x Endurance) + Strength. Average characters will have 30 hit points.