The following are the boosts that you get for levelling up.
It will increase two-handed weapon attack speed and damage. This is increased by fighting with two-handed weapons. Shield Bearer – shields no longer affect weight Raider II – additional 3% 1H weapon speed
Arrow Catcher – larger shield protection area against ranged weapons.
It will increase one-handed weapon attack speed and damage. This is increased by fighting with one-handed weapons.