Fighting Fantasty books have three stats: Skill, Stamina, and Luck.
The activities I have that will need attribute checks:
Finding secret doors
Searching for hidden items in a room
Avoiding the damage from traps
Picking Locks, Disarming Traps, and Fighting Monsters all fall solidly under "Skill"
Avoiding Damage from traps falls under Luck.
Finding Secret Doors, Finding Traps, and Searching for Hidden Items don't fall under either, and so I'm thinking about adding a "Perception" statistic.
Rolling up a character:
A "check" of a statistic consists of rolling two dice, and comparing it to the statistic. If equal or less, the check is "successful". If greater, failure.
A 2 is always successful, a 12 always fails.
A monster will have an Attack Skill, Defense Skill, Perception, Damage and Stamina.
For a character, Skill works as the basis for both attack and defense. Weapons add to attack skill and damage(base damage for a character is 1), and armor adds to defense skill.
Combat works a little differently than a skill check:
First, the combatants roll initiative (2d6+Perception), whoever has the greater roll gets to go first. Re-roll ties.
Next, the attacker rolls 2d6+Attack Skill
Then the defender rolls 2d6+Defense Skill
If the attacker has a higher number, then damage the defender according to their damage value. Defender wins on ties.
Switch and do it again until one combatant is dead or the character runs away...
If the character runs away, the creature gets a bonus whack against the character, probably at a bonus, or maybe even automatic hit... I'm not certain yet...