Stress
Indicates the level of mental strain a unit is under. If Mood is below 0, Stress increases proportionally. If Mood is above 0, Stress decreases proportionally.
When stress reaches its maximum, the unit enters a Mental Collapse state, and stress is reset to 0. If stress hits the maximum again during Mental Collapse, the unit dies instantly.
When Stress maxes out
When Stress reaches Max Stress, the unit rolls Despair Overcome Chance (10% by default). On a success, Stress resets to 0 and the unit gets Heroic Spirit for 2 in-game hours. On a failure, Stress resets to 0, the unit gets Mental Collapse for 12 in-game hours and Mental Collapse: Panic for 2 in-game hours. Reaching Max Stress again while Mental Collapse is still on kills the unit.
No effect or item a player can get changes Despair Overcome Chance.