1d60 any roll
Rank S in skill the roll must be above 2 ((60-(6*10)) + 2) 96.66666666666667 %
Rank A in skill the roll must be above 10 (60-(5*10)) 83.33333333333334%
Rank B in skill the roll must be above 20 (60-(4*10))  66.66666666666666
Rank C in skill the roll must be above 30 (60-(3*10)) 50%
Rank D in skill the roll must be above 40 (60-(2*10)) 33.333333333333335%
Rank E in skill the roll must be above 50 (60-(1*10))  16.666666666666664%
Rank F in skill the roll must be above 60 (60-(0*10)) – Instant fail 0%

Stealth attacks do 2x damage

Standard Health: 100HP – Standard for most games anyway... (This is not modifiable by items or stats)
Standard Damage: 20.
Damage is NOT effected by rank in that weapon class, only your chance to hit.
Players can NOT activate sneak during combat, the enemy would already be aware of their presence.

Skills
Various
Lockpicking
Speech (Lie detection, speech recog.)
Stealth (Including Sneak and stealth kills)

Combat
Melee Combat
Ranged Combat (Non-Magic)
Magic Combat


Magic
Fire Magic (Pyromancy)
Ice Magic (Glaciomancy)
Water Magic (Aquamancy)
Earth Magic (Terramancy)
Chaos Magic (Madness / Chaos)
Dark Magic (Voodoo, Swamp Magic, Cthuluism)
Light Magic

Branches
Technology (Hacking, computer skills)
Medicine