This post contains all items in the mod, with a little hint where to find, and what the item does.
You can test the items with the "/spawnitem [NameOfItem]" cheat command.
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green torch
Drop from burg guard
green torch lasts forever.

yellow hood
Lunatic class
Drop from burg guard

yellow cloak
Lunatic class
Drop from burg guard

slimy wizard hat
Drop sometimes from Burg Guard
Drop from General Gloobutamos; rare Burg Guard
Drop from Pizza Keeper; rare Goblin
+1 INT

slimy iron breastpiece
Drop sometimes from Burg Guard
Drop from General Gloobutamos; rare Burg Guard
+2 AC

elementalist cloak
Drop from Elementalist Bobby Bob Bones; rare Skeleton
+2 INT

Cheddar Cheese Wheel
Drop from Algernon; rare Rat
Drop from Fat Rat; Rat

banana
Drop from cockroach

pizza slice
Drop from Pizza Keeper; rare Goblin

salmon
Common in the Tundra

ham slice
Hidden inside Stone Puzzle

bone spear
low tier weapon
+4 attack

Symbol of Rage
Rare drop from Matilda; Spider boss
puzzle piece

Symbol of Cruelty
Rare drop from Tormentor; Ice Demon boss
puzzle piece

Symbol of Hatred
Rare drop from Herald of Agony; Abomination boss
puzzle piece

ice gloves
Somewhat common in the Tundra
+2 AC

boots of lightness
hidden in a few places in the game
makes you lighter, just like luck stone
+1 AC

boots of super lightness
hidden somewhere
makes you a lot lighter
+1 AC

melting cloak
Somewhat common in the Tundra
+2 AC

ring of randomness
Lunatic class
have many random effects.

manabound amulet
Lunatic class
when taking damage that would kill you, lose 30 mana instead and set your heath to 10

angler fish
Rare drop from Fleshling

tentacle pie
Somewhat common in the Abyss

unicorn horn
Lunatic class
Rare drop from Blind Soul Seeker; rare Eyeball
Very Rare drop from Wan-Rit
remove most debuffs

executioner axe
high tier weapon
+9 attack

granite maul
high tier weapon
+9 attack

trident
high tier weapon
+9 attack

rapier
high tier weapon
+9 attack

pocket cannon
high tier weapon
+17 attack

boulder launcher
god tier weapon; someone was bored during development
not actually in the game, you need to cheat using /spawnitem
+75 attack

Necropolis shield
Necroplis NPCs carry these.
+5 AC

makeshift bow
low tier weapon
+6 attack

wooden warhammer
low tier weapon
+4 attack

machete
low tier weapon
+4 attack

stone axe
low tier weapon
+4 attack

top hat
Drop from Duel-o-Bot in Necropolis
looks fancy

googly eyes
Lunatic class
Drop from Pizza Keeper; rare Goblin

rusty grid
Rare drop from Burg Guard
+1 AC

angry mask
Very Rare drop from Burg Guard
Rare drop from Parasite
+1 STR
+1 DEX
-1 CON

eye mask
Common drop from Eyeball
+1 PER

anti-debuff shield
high tier shield, rare overall
+2 AC
grants immunity to a debuff(sleep, charm, or bleed).

helm of punching
Rare drop from Fleshling
+3 AC
+3 STR when unarmed.

elementalist hat
high tier armor
+2 INT

elementalist double
high tier armor
Lunatic class
+1 AC
+3 INT

lizard leather breastpiece
Sharpshooter class
Drop from Balance Kepper Joe; rare Human
+1 AC
+1 DEX

lifesteal knuckles
Rare drop from Fleshling
+3 AC
+3 HP per hit

mana gloves
Uncommon drop from parasite
+1 AC
+Mana regen

flying shoes
Uncommon drop from Metallic Beast
+Levitation

tomato
Common in the Farm

cabbage
Common in the Farm

pear
Uncommon in the Mines

chain robe
low tier armor
Prophet class
+2 AC

chain aqua robe
not in actually in the game, you need to cheat using /spawnitem
+2 AC
+olympic swimming

marble breastpiece
Uncommon drop from sku-lit, ran-gic, and wan-rit
+4 AC

tin helm
low tier armor
+1 AC

tin breastpiece
low tier armor
+2 AC

tin gloves
low tier armor
+1 AC

tin boots
low tier armor
+1 AC

candle
Prophet class
Uncommon drop from sku-lit
works like a torch

everlasting candle
Rare drop from sku-lit
works like a torch

Golden Key
Hidden inside the temple under Ants Nest
puzzle piece(?)

sacrificial dagger
Prophet class
Deals 25 damage to you, and gives [Str potion] and [elemental focus]; lasts 35 seconds.

cross of lich banishment
Prophet class
+1 attack
+99 if againts liches.

spellbook of ultra healing
Prophet class
Learns [ultra healing]: costs 90 MP to cast, heals 90+


Legendaries:

The abyssal set:

mace: Pyz
Drop from Elementalist Bobby Bob Bones; rare Skeleton
+1 attack
Whenever you hit an enemy, casts a random spell for you. uses your MP.
this only happens when above 20 MP.

spear: Klirynippe
Drop from General Gloobutamos; rare Burg Guard
+9 attack
10% chance to paralyse on hit.

axe: Winter's Bite
Drop from The abominable snowman; rare Yeti
+9 attack
Slows target on hit

sword: Gorefiend
Drop from The Bloodthirsty; rare fleshling
+9 attack
Bleeds target on hit.

crossbow: Viper
Drop from Twisted Vineweaver; rare chlorosh
+16 attack
+6 DEX
mini-stun while you are full HP.

helm: Spirit Visage
Hidden inside minetown.
+5 AC
+4 DEX
+4 PER

boots: Phantom Walker
Hidden inside crypticspiral
+5 AC
Walk on water.
Immune to slow and paralyse.

gloves: Ghost Claws
Hidden inside snowtown
+5 AC
works like knuckles, dealing damage the more armor you have.

breastplate: Void Mail
Hidden inside empty place
+6 AC
+Magic resist
+4 CON

cloak: Ectoplasm
Hidden inside ghost platforms
Gives you +10 DEX and Invisibility for 3 seconds(melee hit).

shield: Deep Lament
Inside the catedral(Sometimes spawns in the tundra).
+6 AC

mask: Mirage Mask
Rare drop from Matilda; Spider boss
+Invisibility
Immune to blindness.

ring: Hi-Ma-Na
Rare drop from Tormentor; Ice Demon boss
Gain +5 MP per hit(melee only)

amulet: The Vegeance
Rare drop from Herald of Agony; Abomination boss
When HP equals to 25 or less heals 20 HP on hit(melee only)


The inquisitor set:

mace: A Ton Hammer
Drop from Titanium; rare Metallic Beast
+14 attack
weighs 1000

spear: The Impaler
Drop from Matriarch; rare Ant
+8 attack
Kills any target below 50 HP.

axe: Nefarius Blade
Drop from Eater of Minds; rare parasite
+15 attack
On hit, if you have more than 10 Heath deals 10 damage to you and 5 to your target.

sword: Dimensional Scimitar
Drop from Vermin Lord; rare Rat
+8 attack
+3 STR
+2 DEX
+4 INT
-7 PER

bow: Fairy Wing
Drop from Keeper of The Sands; rare Dust Devil
+14 attack
25% chance to charm the target for 4 seconds.

helm: Imperial Crown
Hidden inside the temple under Ants Nest.
+3 AC
+8 CHR

boots: Nature's Steps
+3 AC
Inside the Gap(Sometimes spawns in the tundra & labyrinth)
Grats levitation after reaching Hamlet/Necropolis.

gloves: Grasp of The Divine
+3 AC
Inside the Gap(Sometimes spawns in the tundra & labyrinth)
Deals additional +10 damage to demons, ignore armor.

breastplate: The Kingdom
Hidden under the Chamber of Worms.
+4 AC
turns 20% of your CHR into CON.

cloack: Cage of The Forgotten
Hidden inside the Farm
adds 2 extra rows to the inventory, like the backpack but bigger.

shield but not really: Archangel's Wisp
Rarely hidden inside Chamber of Worms
Lights the floor... yes this is a legendary torch.

mask: Bane of The Undead
Rarely hidden inside Farm
Deals additional +10 damage to undead, ignore armor.

ring: Ring of All Trades
Rarely hidden inside Ants Nest
+1 ALL STATS

amulet: Magusan's Last Nigthmare
Rarely hidden inside Chamber of Worms
+80% magic res.(max) -30 CON


The lost set:

mace: Dracula
Drop from Blo-Odd; rare ran-gic
+9 attack
+6 HP per hit

polearm: Mar-Sin
Drop from Fra-Cor; rare sku-lit
+9 attack
Was a diferent effect depending on each area.
Mines: +1 attack
Swamp: disorient
Burg: poison
Labyrith: blind
Tundra: slow
Ruins: charm
Hell: fire
Catacombs: bleeding
Crystal Caves: paralyze
Citadel: fear
Abyss, Farm, Factory: confuse

axe: The Ram
Drop from War-One; rare wan-rit
+9 attack
Deals addicional damage equals to 15% of your missing Health, ignores armor.
that is: the lower your HP is, the more damage you do.

sword: Manaburn blade
Drop from The Epy-Lif; rare sku-lit
+9 attack
+3 Maximum MP, every time you last hit a target.

bow: Tuskdren
Drop from Sni-Per; rare ran-gic
+5/10/15/20/25/30 attack
Damage depends on how deep you are into the dungeon.

helm: Soulfire Veil
Hidden inside a Fragment level.
+3 AC
1% chance per (melee) hit, to cast [fireball] + [cold] + [lightning] at once.

boots: Pathfider's Tracks
Hidden inside a Fragment level.
+3 AC
Sometimes reveals the map, by casting [magic mapping] for you.

gloves: Spiritual Fragment
Hidden inside a Fragment level.
+3 AC
+7 if against bosses
works like knuckles, dealing damage the more armor you have.

breastplate: Meteor Armor
Hidden inside a Fragment level.
+4 AC
Gives HP at random, does not affect regen.

cloack: Stardust Cape
Hidden inside a Fragment level.
Gives MP at random, does not affect regen.

shield: Moonstone Guardian
Drop from Cosmonaut; rare automaton
+3 AC
Immune to [paralyzed], [slow], [poison], [charm], [sleep], [bleed], [blind], and [confuse].

mask: Venomancer's Mark
Drop from Lali, Poison Fanatic; rare human
Casts [acid spray] at random.

ring: Pyre
Drop from Living Furnace; rare automaton
Set target on fire for 4 seconds(melee only).

amulet: Adaptive Amulet of Regeneration
Drop from Balance Kepper Joe; rare human
+mana regen; or
+health regen; depending with one is lower.


Others:

scroll of legends
At the end of Factory
Drops a random legendary item.