Endurance

Endurance or END is one of the basic statistics in System Shock 2.

Overview
The maximum effective level of endurance is 8. A player can only permanently upgrade Endurance to level 6, while the last two levels require a combination of the following items/psionic disciplines: Note that exceeding level 8 does not yield extra benefits.
 * An EndurBoost™ Implant (+1 endurance)
 * Psychogenic Endurance (+2 endurance)

Endurance increases the health points and the resistance to environmental hazards of a player. The amount bonus health points given is varied by difficulties, see Endurance vs Maximum Health Table below.

Strategies

 * The usefulness of Endurance depends on one's playstyle. If the player is able to eliminate most enemies without an actual fight, such as using the TC-11 "Brick" Grenade Launcher, Endurance is much less useful.
 * Quick-saving frequently can reduce the need of Endurance. A player should avoid taking damage rather than being prepared to take more damage.
 * Bear in mind that the Tank O/S Upgrade provides more health points than a level of Endurance on higher difficulties, and hence the former should be on a higher priority.