Some metagamey stuff and rules:
I won't show you overall health rating or something because I use different things to determine it.
Bodypart damage leads to expected results, with +1 to difficulty check with each point of damage in any action the bodypart is involved in.
You don't magically "heal", but Power allows you to negate "pain", thus every point of Power decreases the penalty from a damage. I.e. 1 Power means that 1 damage to a hand won't make you to use it worse. Also it helps you to pass strength checks.
Agility is just a bonus to difficulty checks whenever you attempt a to-hit action, evade action or some another action which requires your dexterity/speed.
Mental points are special, their amount and restoration time depends on Will, and effectiveness of their drain depends on it and insight (based on situation). Also Insight helps you to determine the origin of things and solve puzzles.
Power = toughness, strength
Agility = dexterity, speed
Will = willpower, persistence
Insight = intelligence, logic, sixth sense
About alcohol and drugs:
- Small amount of alcohol ("little drunk") gives you +1 penalty to all dexterty checks,but give you +1 bonus to mental checks.
- Medium amount of alcohol ("drunk") gives you +2 penalty to all dexterity checks, give +1 bonus to toughness checks and +1 bonus to mental checks
- Big amount of alcohol ("very drunk") gives you +4 penalty to all dexterity checks, give +2 bonus to toughness checks and +2 bonus to mental checks
Drugs work different. If they make your senses sharper, they add a specific amount to your dexterity checks, but reduce the same amount from your mental checks.
I won't say much more yet because I don't want to spoil the story, but I want you to slowly get accustomized to rules. And the system is pretty simple, I don't want to make it more important than the story, however I feel that there should be some rules shown to you so you wouldn't have a feeling that you can't control anything.