1 – End. Str. -1, -10 skill checks
2 – End. Str. Agi. Per. -2, -20 to skill checks
3 – All stats -4, -30 to skull checks, Hallusinations (Fainting)
4 – All stats -5, -50 to skill checks, Fainting
5 – Death
Fatigue is gained by going 24 hours without food, sleep or other rest, or under special circumstanses like extreme exhertion or a magical burnout.
It can be regenereated my eating plentifully, resting or other means cohering to the nature of the fatigue gained.
Spells and other substances can temporariliy postpone the penalties of fatigue.