Crystal Helmet (highest physical defense)
1) Dragonsong Temple, treasure chest.
2) Storgand - Go down the street and buy/steal from [Natalia].
Crown of the Sleeping God (highest SP bonus, high attribute defense)
1) Lost ruins, locked treasure chest.
2) Noble Code-Dongcheng District, buy/steal from [Let].
Gold alloy hat (highest attribute attack bonus, highest attribute defense)
1) Ice dragon mouth, locked treasure chest. Chapter 4 of Priest, dark cave, locked treasure chest.
2) Northledge, purchased/stealed from [Angela] (End of Chapter 4 of Swordsman).
Turban of Silence (highest avoidance)
1) Northleach, weapons shop.
2) Kuoli Crest - At the top of the mine, there is a worker where you can also steal or buy the Silence Bandana.
Gareth's Helmet (highest critical hit)
1) Chapter 3 of Thieves, dropped by boss Gareth.
Speed helmet (top speed)
1) The tomb of the Wang family, locked treasure chest.
2) Merchant Chapter 2, Morlock's mansion, locked treasure chest.
3) Bodaful - Lower floor, buy/steal from [Crazy Sword Vares].
Veteran's Helmet (recovers HP each turn)
1) [Revenge on behalf of] Noble Code, [the betrayed man] accepts the mission. Go to [Flatlando Atlas Dam] to find the [Drunk Man Holding a Medal] next to the tavern and use Challenge/Instigation on him. Defeat him and obtain the [Medal of the Oath]. [Drunk Man with a Medal] Strength 6 (weaknesses are sword, axe, and bow). Go to [Costlando Grodeshua] to find the [violent man holding a medal] on the beach below on the left and use Trial/Instigation on him. Defeat him and obtain the [Medal of the Oath]. [A violent man with a medal] Strength 6 (weaknesses are guns, fire, and light). Go to the tavern of [Woro Landas Doscvaro] to find the [Suspicious Businessman with a Medal] and use Trial/Instigation on him. Defeat him and obtain the [Medal of the Oath]. [Suspicious businessman holding a medal] Strength 6 (weaknesses are sword, staff, and light). Afterwards, return to the Noble Cod East area to find the [Betrayed Man] and give him 3 [Medal of the Oath] to complete the mission.
Historian's Hat (recovers SP each turn)
1) [Historical Researcher Noelle (3)] Abajodo, accept the mission from [Noelle]. Find the [Big Prop Manager] in front of the hotel and use Buy/Steal on him to get the [Old Tapestry]. Return to Noelle and bring him the [Old Tapestry] to complete the mission.
Monster controller's hat (reduces wind damage taken by 25%)
1) [Ashlan, Descendant of the Monster Controller (3)] Duskvaro, accept the quest from [Ashlan]. Use Guidance/Lure on Ashlan to get him to join the party. Go to [Lost Ruins] to find [Worried Father] and talk to him to complete the mission.
Teacher's hat (reduces lightning damage taken by 25%)
1) [Teacher Tiaquila (3)] Vespamir, accept the quest from [Tiaquila]. Go to the right side of [Levilando Kulia Brook] to find [Bast] and use Guidance/Instigation on it to join the team. Return to Vespamir, find [Tirakia] and talk to him to complete the mission.
Adventurer's Hat (reduces light damage taken by 25%)
1) [Adventurer Lu Man (3)] Grant, accept the mission from [Lou Man]. Use Trial/Instigation on [The Thief in the Port] on the right side of Lu Man and defeat him to complete the mission. [Thieves in the Port] Strength 7 (weaknesses are guns, bows, and darkness).
Reblo's helmet (reduces dark damage taken by 25%)
1) Accept the mission from Kuolicrest [Baron Reblo]. Enter the room behind Reblo and use Inquiry/Inspection on [Scholar Odette] to obtain the information [Reason for not visiting the grave]. Go to [Flatlando Noble Cod East Area] and tell [Baron Reblo] the [reason for not going to visit the grave] to complete the mission.