Increase the attack value of your chosen weapon type by 10% per level.

The Weapon Types are:

• Daggers
• Snares
• Throwing Weapons

Each attack type is its on skill and you would have to level up each one individually. Just because you have a weapon type daggers at level 3 you won't also have throwing weapons at level 3. When you acquire throwing weapons it will be at level 1.

This is a Tier 3 skill

Level 1: 75/150
Level 2: 100/200
Level 3: 125/250
Level 4: 150/300