There are a total of 286 pieces of Armor, you will find a lot of them naturally by opening the treasure chests/ Purchasing equipment from the shop or by using the 'Offering Tables'...
The Best way I did this was whatever Equipment I was missing I just used kept going into the labyrinth at floors 9&10 as there was always 2 offering tables (1 per floor) and traded items around the area on the list so for example:
If I need 'Cross Armor +' I would trade a 'Cross Armor, Full Cross or Something Height down the list'...
The Offering Table will reject an offering if no item is close the the valve of the item you get rid of, plus I never noticed any duplicate it was always a new item...
Armor 286 (Last one) was the only one I couldn't seem to get from the offering table, it was on the Ophiuchus Labyrinth, 14th floor behind the sealed door... and the start children's luck was over 1000 (each)
to open the door... then located in a treasure chest
(Listed for Weapons & Items will be Published on there own trophy, The guide will be a rough repeat for the other 2 trophies)...
Clothes
Clothes +
Amazing Clothes
Leather Mail
Leather Mail +
Hard Leather
Cross Armor
Cross Armor +
Full Cross
Divine Armor
Divine Armor +
Great Spirit
Heavy Plate
Heavy Plate +
Titan Plate
Oracle Guard
Oracle Guard +
Oracle Mail
Order Guard
Order Guard +
Face God
Comet Garb
Comet Garb +
Shooting Star Clothes
Silam Mail
Silam Mail +
Vemon Guard
God's Gift Armor
God's Gift Armor +
God's Gift Fine Armor
Child's Clothes
Child's Clothes +
Leather Armor
Cuirass
Chain Plate
Battle Armor
Battle Armor +
Rigid Armor
Rigid Armor +
Paras Breastplate
Paras Breastplate +
Moon Aketon
Moon Aketon +
Elven Vest
Elven Vest +
Holy Mail
Holy Mail +
Diving Mail
Moon Plate
Moon Plate +
Full Moon Plate +
Stellar Plate
Practice Wear
BreastPlate
Leather Clothes
Chain Clothes
Chain Clothes +
Rigid Clothes
Rigid Clothes +
Feather Clothes
Feather Clothes +
Scale Clothes
Scale Clothes +
Scale Gain
Seven-Fortune Garb
Seven-Fortune Garb +
All-Fortune Garb
Charm Clothes
Charm Clothes +
Delta Clothes
Star God Black Belt
Brass Armor
Iron Plate
Heavy Shell
Great Armor
Great Armor +
Scale Plate
Scale Plate +
Ex Armor
Ex Armor +
Knight's Plate
Knight's Plate +
Valor Shell
Valor Shell +
Paras Plate
Paras Plate +
Earth Plate
Energy Shell
Energy Shell +
Aura Shell
Luminous Plate
Cloak
Robe
Magic Robe
Magic Robe +
Faith Robe
Faith Robe +
Silk Robe
Silk Robe +
Medis Robe
Medis Robe +
Misty Robe
Mysterious Robe
Arches Robe +
Full Arches Robe
Master Robe
Dalmatica
Dalmatica +
Surplice
Surplice +
Luminous Clothes
Luminous Clothes +
Feel Cloak
Feel Cloak +
Calming Cloak
Holy Clothes
Holy Clothes +
Divinge Clothes
Oracle Clothes
Feather Plate
Feather Plate +
Silver Vest
Silver Vest +
Scale Vest
Scale Vest +
Poison Vest
Aura Mail
Aura Mail +
Auras Mail
Victory Armor
Victory Armor +
Supreme Armor
Hell Cuirass
Hell Cuirass +
Hell's Plate
Brigandine
Silver Mail
Silver Mail +
Verita Scale
Verita Scale +
Arches Shell
Arches Shell +
Full Archeless
Luck Armor
Luck Armor +
Great Luck Armor
Demon's Mail
Gladiator Armor
Gladiator Armor +
Great Gladiator Armor
Master Guard
Master Guard +
Great Master Guard
Veteran Armor
Veteran Armor +
Great Veteran Armor
Tank Clothes
Tank Clothes +
Great Tank Clothes
Knight's Guard
Knight's Guard +
Paladin Guard
Diving Guard
Magic Mail
Magic Mail +
Spell Guard
Force Mail
Force Mail +
Grand Force
Balance Mail
Balance Mail +
Libra Mail
Twin Mater
Ninja Clothes
Ninja Clothes +
Un-Ninja Clothes
Wind Clothes
Wind Clothes +
Light Ninja Garb
Blessed Suit
Blessed Suit +
Ninja Of Kami
Water Ninja Garb
Water Ninja Garb +
Haze Ninja Garb
Idaten Clothes
Survive Shell
Survive Shell +
Alive Shell
Calm Garb
Calm Garb +
Void Garb
Dex Armor
Lunatic
Lunatic +
Dos Lunatic
Bio Outer
Bio Outer +
Bio Taker
Onslaught
Lancer Shell
Lancer Shell +
Lancer's High
Paras Mail
Paras Mail +
Grace Mail
Lancer Garb
Hunter Armor
Hunter Armor +
Hunter Plate
Feel Breath
Feel Breath +
Nature Feel
Fang Guard
Genius
Genius +
Genius Clothes
Fortuna
Fortuna +
Fate Clothes
Clear Robe
Clear Robe +
Clarity Robe
Supersonic Garb
Supersonic Garb +
Lightspeed Garb
Impel Robe
Blacksmith Heart
Blacksmith Heart +
Blacksmith Soul
Create Shell
Labyrinth Armor
Labyrinth Armor +
Const. Lab. Armor
Lucky Armor
Lucky Armor +
Cool Luck
Poison Mail
Poison Mail +
Detox Mail
Wing Armor
Wing Armor +
Aero Armor
God's Mail
Starry Robe
Starry Robe +
Starry Clothes
Shooting Star Robe
Shooting Star Robe +
Polar Garment
Stardust Garment
Heart Plate
Heart Plate +
Heart Full Plate
Feel Mail
Feel Mail +
All Feel
Bond Armor
Callisto Armor
Deimos Mail
Uranus Shell
Helios Armor
Zeus Plate
Peleus Clothes
Holy Beast Garb
Cerberus Armor
Gigas Armor
Thor Scale
Gaia Mail
Magician's Top
Emperor Clothes
Saint Garb
God Knows
Four Gods Garb
Phoenix Garb
Philosopher's Garb
Big Bang Clothes
Romance Mail
Glorious Armor
Astro Suplis
Stellar Shine
Bandias
Bond Garb
Robust Armor
Legend Mail
Bond Great Armor