This guide will basically spoil a lot of the random aspects of the game. I strongly, strongly suggest that you attempt to get as much of the journal as possible before resorting to the guide, as a lot of the game's fun comes from unintentionally blowing yourself up exploring the randomness. For that reason, I will not be explaining what each item does, only how to obtain it.

Please let me know if I missed anything or if there are any corrections.

Please note that you must identify an item for it to count, simply having it in your inventory will not work. Throughout the whole journal, using scrolls of identify or divination and the Examine button are strongly encouraged.

In order:
Worn Shortsword, Mage's Staff, Dagger, Studded Gloves, Rapier
These are starting weapons for each of the five classes, so once you've unlocked everyone, you've got them.

Shortsword, Handaxe, Spear, Quarterstaff, Dirk, Sickle, Pickaxe
These tier-2 weapons will be found mostly early on in the dungeon, except the Pickaxe, which you will get from doing the Blacksmith's quest on floors 11-14.

Sword, Mace, Scimitar, Round Shield, Sai, Whip
Tier-3, also found randomly throughout the dungeon

Longsword, Battle Axe, Flail, Runic Blade, Assassin's Blade, Crossbow, Katana
Tier-4, also found randomly throughout the dungeon, usually later on

Greatsword, War Hammer, Glaive, Greataxe, Greatshield, Stone Gauntlet, War Scythe
Tier-5, same as above, more rare than the others.

You may find scrolls of transmutation useful for obtaining these if you're not finding them at random, but they will not change an item to one in a different tier.



Cloth Armor: If you've started the game you have this. Congrats!
Leather Armor: Tier-2, found liberally throughout the early floors
Mail Armor: Tier-3, also found easily
Scale Armor: Tier-4, slightly more rare
Plate Armor: Tier-5, the rarest
The remaining five are the end-game armor for each of the five classes in order. You receive these by defeating the Dwarf King and wearing his crown. They are: (Hero's) Platemail / Robe / Garb / Cloak / Breastplate



Oh boy, here we go. In order:
Enchantments: Blazing, Chilling, Kinetic, Shocking, Blocking, Blooming, Elastic, Lucky, Projecting, Unstable, Corrupting, Grim, Vampiric
Curses: Annoying, Displacing, Dazzling, Explosive, Sacrificial, Wayward, Polarized, Friendly

You must identify enchanted or cursed items for them to be added to your journal. You can find them randomly throughout the dungeon or by using Stones of Enchantment, Scrolls of Enchantment, and Curse or Magical Infusions.



Glyphs: Obfuscation, Swiftness, Viscosity, Potential, Brimstone, Stone, Entanglement, Repulsion, Camouflage, Flow, Affection, Anti-Magic, Thorns
Curses: Anti-entropy, Corrosion, Displacement, Metabolism, Multiplicity, Stench, Overgrowth, Bulk

All the same methods as above apply for obtaining these, in addition to the Arcane Stylus.



Throwing Stone: Warrior's starting weapon
Throwing Knife: Rogue's starting weapon
Throwing Spike: Huntress' starting weapon
Dart: Purchased from shops
Fishing Spear, Throwing Club, Shuriken, Throwing Spear, Kunai, Bolas, Javelin, Tomahawk, Heavy Boomerang, Trident, Throwing Hammer, Force Cube: Found throughout the dungeon



Magic Missile, Lightning, Disintegration, Fireblast, Corrosion, Blast Wave, Living Earth, Frost, Prismatic Light, Warding, Transfusion, Corruption, Regrowth

Again, found at random, scroll of transmutation, or the wandmaker's quest, possible crystal chest reward.



Accuracy, Arcana, Elements, Energy, Evasion, Force, Furor, Haste, Might, Sharpshooting, Tenacity, Wealth

Found at random, scroll of transmutation, or imp's quest, possible crystal chest reward.



Alchemist's Toolkit, Chalice of Blood: See below
Cloak of Shadows: Rogue starting item
Dried Rose, Ethereal Chains, Horn of Plenty, Master Thieves Armband, Sandals of Nature, Talisman of Foresight, Timekeeper's Hourglass, Unstable Spellbook: Randomly found throughout dungeon, scroll of transmutation, crystal chests.



Rat Skull, Parchment Scrap, Petrified Seed, Exotic Crystals, Mossy Clump, Dimensional Sundial, Thirteen Leaf Clover, Trap Mechanism, Mimic Tooth, Wondrous Resin, Eye of Newt, Salt Cube, Vial of Blood, Shard of Oblivion, Chaotic Censer

You'll find these by infusing the Magical Catalyst with alchemical energy, and it's RNG to get them all from there. It took me several runs to finally get the Parchment Scrap, of all things.



Broken Seal, Spirit Bow: Starting items of Warrior and Huntress respectively
Waterskin, Velvet Pouch: Starting items
Potion Bandolier, Scroll Holder, Magical Holster: Purchase from Shopkeeper
Amulet of Yendor: Die 800 times, then collect from beating Yog on run 801 (maybe)

I'm going to order this section a little differently for ease of access/explanation.


Regular:
Strength, Healing, Mind Vision, Frost, Flame, Toxic Gas, Haste, Invisibility, Levitation, Paralytic Gas, Purity, Experience
Exotic:
Mastery, Shielding, Magical Sight, Snap Freeze, Dragon's Breath, Corrosive Gas, Stamina, Shrouding Fog, Storm Clouds, Earthen Armor, Cleansing, Divine Inspiration

Regular potions are found scattered throughout the dungeon. Exotic potions can be created by placing their regular equivalent in the alchemy pot and infusing them, or by using the Exotic Crystal trinket.


Regular:
Upgrade, Identify, Remove Curse, Mirror Image, Recharging, Teleportation, Lullaby, Magic Mapping, Rage, Retribution, Terror, Transmutation
Exotic:
Enchantment, Divination, Anti-magic, Prismatic Image, Mystical Energy, Passage, Siren's Song, Foresight, Challenge, Psionic Blast, Dread, Metamorphosis

Again, find scattered throughout the dungeon for regular scrolls. Use alchemy pot infusions to create exotic versions or pick up the Exotic Crystal trinket.


Enchantment, Intuition, Detect Magic, Flock, Shock, Blink, Deep Sleep, Clairvoyance, Aggression, Blast, Fear, Augmentation

These can be found throughout the dungeon, using the Petrified Seed trinket, or by using the alchemy pot to deconstruct the corresponding scroll.


Seeds: Rotberry, Sungrass, Fadeleaf, Icecap, Firebloom, Sorrowmoss, Swiftthistle, Blindweed, Stormvine, Earthroot, Mageroyal, Starflower
Darts: Rot, Healing, Displacing, Chilling, Incendiary, Poison, Adrenaline, Blinding, Shocking, Paralytic, Cleansing, Holy

The Rotberry seed is found during the Wandmaker's quest and is needed to make the Rot Dart. All other seeds are found randomly by stepping on grass. The Sandals of Nature are great to collect these, as is the Huntress. To get the matching dart, you will need to tip the darts with each seed. This means sacrificing the wandmaker's quest reward for the rot dart.

Ration of Food - you start the game with this.
Pasty - found randomly throughout the dungeon.
Mystery Meat - drop from killing piranhas, or occasionally crabs, albino rats, etc.
Chargrilled Meat, Stewed Meat, Frozen Carpaccio - Created by burning, alchemy-pot-cooking, and freezing mystery meat respectively. Try wands or traps.
Small food ration - Bought from shopkeeper
Dungeon Berry - Available from Huntress' Nature's Bounty talent
Supply Ration - Available from Rogue's Cached Rations talent
Blandfruit - Found in secret blandfruit or grass rooms.
Phantom Meat - Dropped by the dreaded phantom piranha. Shows up rarely, more often if using the Rat Skull trinket.
Meat Pie - Created by combining Ration of Food + Pasty + Mystery Meat in an alchemy pot


The regular Bomb is found throughout the dungeon. Add it and another item in an alchemy pot to create:
Frost Bomb = Bomb + Potion of Frost
Fire Bomb = Bomb + Potion of Liquid Flame
Smoke Bomb = Bomb + Potion of Invisibility
Regrowth Bomb = Bomb + Potion of Healing
Wooly Bomb = Bomb + Scroll of Mirror Image
Noisemaker = Bomb + Scroll of Rage
Flashbang = Bomb + Scroll of Recharging
Holy Bomb = Bomb + Scroll of Remove Curse
Arcane Bomb = Bomb + Blob of Goo
Shrapnel Bomb = Bomb + Cursed Metal Shard



Once again, in an alchemy pot, but requiring more energy...
Brews:
Unstable = Any seed
Infernal = Potion of Flame
Blizzard = Potion of Frost
Shocking = Potion of Paralytic Gas
Caustic = Potion of Toxic Gas + Blob of Goo
Aqua = Potion of Storm Clouds

Elixirs:
Honeyed Healing = Potion of Healing + Shattered Honeypot
Aquatic Rejuvination = Potion of Healing + Blob of Goo
Arcane Armor = Potion of Earthen Armor + Blob of Goo
Dragon's Blood = Potion of Dragon's Breath
Icy Touch = Potion of Snap Freeze
Toxic Essence = Potion of Corrosive Gas
Might = Potion of Strength
Feather Fall = Potion of Levitation



Still at the alchemy pot...

Unstable Spell = Any spell + any runestone
Wild Energy = Scroll of Recharging + Cursed Metal Shard
Telekinetic Grab = Liquid metal
Phase Shift = Scroll of Teleportation
Alchemize = Any stone + Any seed
Curse Infusion = Remove Curse + Cursed Metal Shard
Magical Infusion = Scroll of Upgrade
Recycle = Scroll of Transmutation
Reclaim Trap = Scroll of Magic Mapping + Cursed Metal Shard
Summon Elemental = Elemental Embers
Beacon of Returning = Scroll of Passage



Gold: It's everywhere.
Energy Crystals: Found in Alchemy rooms
Dewdrop: Collected from grass
Iron, Golden, Crystal Keys: Found at random on floors with chests or locked doors
Skeleton Keys: Dropped from bosses
Magical Catalyst: Randomly found in early floor chests
Arcane Stylus: Randomly found, can be purchased from shops sometimes
Torch: Find on final floors or purchase from Imp Shop
Honeypot: Find randomly or sometimes in secret bee rooms
Ankh: Bought at shops
Corpse Dust, Elemental Embers, Ceremonial Candle: Wandmaker quest items
Dark Gold Ore: Blacksmith quest item
Dwarf Token: Imp quest item
Blob of Goo: Dropped from goo boss, or sometimes black goo enemies
Tengu's Mask: Dropped from Tengu
Cursed Metal Shard: Dropped by DM-300
Dwarf King's Crown: Dropped by the Dwarf King
Liquid Metal: Made by deconstructing thrown weapons in an alchemy pot
Arcane Resin: Deconstructing wands in alchemy pot
Seal shards, broken staff, scrap of fabric, bow fragment, broken hilt: Dropped by defeated heroes of each class, found in subsequent run.

Found on floors 1-4
Marsupial Rat, Sewer Snake, Gnoll Scout, Swarm of Flies, Sewer Crab, Slime

Floors 6-9
Skeleton, Crazy Thief, DM-100, Prison Guard, Necromancer

Floors 11-14
Vampire Bat, Gnoll Brute, Gnoll Shaman (red/blue/purple), Cave Spinner, DM-200

Floors 16-19
Dwarven Ghoul, Fire Elemental, Frost Elemental, Shock Elemental, Dwarf Warlock, Dwarf Monk, Golem

Floors 21-24
Ripper Demon, Demon Spawner, Succubus, Evil Eye, Scorpio


You will automatically find all of these through the course of going through the dungeon.

Goo, Tengu, Power Pylon, DM-300, King of Dwarves, God's Larva, Burning Fist, Soiled Fist, Rotting Fist, Rusted Fist, Bright Fist, Dark Fist, Yog Dzewa

Since Yog only summons 3 fists in his typical fight, if you are having trouble getting the missing ones, you may wish to play with Badder Bosses enabled.


Wraith - Spawned by tombstones or in wandmaker's quest
Giant Piranha - Spawns in piranha trap rooms
Mimic, Golden Mimic - Spawns randomly throughout the dungeon, more with Mimic Tooth
Ebony Mimic - Has a chance of spawning with the Mimic Tooth trinket
Animated Statue - Spawns in its own trap room
Summoned Guardian - Summoned by stepping on a guardian trap
Red Sentry - Spawns in its own trap room


All these enemies have a rare chance of spawning in their given areas. The chance can be increased for all (except Mimics) using the Rat Skull trinket.

Albino Rat, Caustic Slime - floors 1-4
Crazy Bandit, Spectral Necromancer - floors 6-9
Armored Brute, DM-201 - Floors 11-14
Chaos Elemental, Senior Monk - Floors 16-19
Acidic Scorpio - Floors 21-24
Tormented Spirit - 1 in 100 chance to replace normal wraith
Phantom Piranha - Spawns where regular piranhas would be
Crystal Mimic - Spawns where Crystal Chests would be
Armored Statue - Spawns where Animated Statue would


Fetid Rat, Gnoll Trickster, Great Crab - Spawn during the Sad Ghost quest depending on floor
Newborn Fire Elemental, Rot Lasher, Rot Heart - Spawn during Wandmaker's quest
Crystal Wisp, Crystal Guardian, Crystal Spire, Gnoll Guard, Gnoll Sapper, Gnoll Geomancer - Spawn during the Troll Blacksmith's quest.


Sad Ghost - floors 1-4
Rat King - hidden on floor 5, running his kingdom
Shopkeeper - found every five floors starting on floor 6
Old Wandmaker - floors 6-9
Troll Blacksmith - floors 11-14
Ambitious Imp - floors 16-20
Sheep - spawned by flock traps, Stones of Flock, or cursed wands
Golden Bee - comes from shattering honeypots or finding hidden bee rooms


Mirror Image, Prismatic Image- spawned from reading scrolls of Mirror Image and Prismatic Image
Sad Ghost- this version comes from using the Dried Rose artifact
Ward, Sentry - created by the Wand of Warding, Sentry by using multiple charges
Earthen Guardian - created by the Wand of Living Earth
Shadow Rogue, Wooden Decoy - Final tier Rogue abilities, from selecting Shadow Clone and Smoke Bomb respectively
Spirit Hawk - final tier Huntress ability (Spirit Hawk)


You will need to examine or activate these traps to add them to the journal. The Trap Mechanism trinket makes them all more common. Generally more dangerous traps show up more frequently the farther down you go. Some traps (rockfall, explosive, flock, etc) will be found frequently in puzzle rooms.

Worn Dart , Poison Dart, Disintegration, Gateway
Chilling, Burning, Shocking, Alarm, Gripping Teleportation, Ooze
Frost, Blazing, Storm, Guardian, Flashing, Warping
Confusion Gas, Toxic Gas, Corrosive Gas
Flock, Summoning, Weakening, Cursing
Geyser, Explosive, Rockfall, Pitfall
Distortion, Disarming, Grim


Rotberry - Found by throwing/planting the Rot Seed in the Wandmaker's quest
Sungrass, Fadeleaf, Icecap, Firebloom, Sorrowmoss, Swiftthistle, Blindweed, Stormvine, Earthroot, Mageroyal, Starflower - found by planting the corresponding seed. Sandals of Nature help with finding these, or the wand of regrowth.
Blandfruit - Spawns in its own special room or sometimes in grass rooms
Dewcatcher, Seedpod - Spawns in secret grass rooms or with an upgraded wand of regrowth
Golden Lotus - only accessible through the Wand of Regrowth at high upgrade levels

Lore is pretty simple to obtain, you'll get it from repeatedly exploring the dungeon.
Region Introductions are found in their respective areas.
The remaining sets are also found in their respective areas over multiple playthroughs.