Two damage systems, both are vs target number (practically the target number is Stamina+armor like in World of Darkness, with those general stats as well).
The first one, is that you add Wielder Strength or Weapon Strength + weapon modifier + skill, and then turn the resulting value into a die, which are rolled and have to exceed the TN to cause damage.
Like, Strength 3 + Modifier 1 (knife) + skill 4 = 8, resulting in the roll of a D8, to exceed a total armor of, say, 4 (Stamina 3 + 1(leather jacket).)
The second one, relies on using how easy or hard to hit something it is as a base die, instead.
Like, It is actually hard to hit someone with the bullet from a rifle if you don't aim, so it would have a D4, while it is far easier to wound someone nearby with a sword, so it would have a D10, and on that, skill would make the die higher, and the potential damage would add or subtract to the total.
I keep wracking my head over what would be best.