The Destroyer Path focuses on improving a Knight's Offensive potential. All of their Ability modified Skills expect (and sometimes require) a two handed physical weapon. This Path also supplies aggressive protection such as counter attacking.
Keep: Counter Stance - improved Duration.
???: Close Combat - improved Duration.
The Invincible Hero: Demonic Edge - improved Physical Damage.
Flames of Anger: Wrath of Gaia - improved Cooldown.
Titan Arm: Primitive Force - improved Cooldown.
Fighting Spirit: Lineage Sword - improved Physical Damage.
Early Cut: Demon Charge - improved Cooldown.