Cards

Talking directly to the Librarian gives the player hints on how to acquire chaos cards!

Gear Cards
All gear cards are "Balanced" difficulty. {| class="article-table" !Card Name !Equipment !How to Unlock

Alchemist

 * Passive: Alchemy, Alchemists Belt, Random Scroll
 * Collect 3 Alchemy Orbs in one run.

Banker

 * Power: Zenny Shot, Magnetic Belt
 * Have 2000 Zenny on hand.

Blink

 * Power: Teleport, Blinking Stone
 * Teleport 20 times in one floor.

Dragon

 * Rapier, Sliding Boots
 * Have the Rapier Soul and Sliding Boots equipped at the same time.

Exorcist

 * Power: Corpse Explosion, Raise Pet Spellbook
 * Have Corpse Explosion and 2 Upgrade Orbs.

Hoplite

 * Spear, Jump Boots, Mirror Image Spellbook
 * Found on a floor infested with Hoplites.

Leader

 * Passive: Fire Pet Affinity, Flag of Friendship
 * Collect 3 Fire Pet / Sword Fire Pet Affinity Orbs (can mix & match) in one run.

Lord

 * Stomping Boots, Shockwave Spellbook
 * Obtain stomping boots, and shockwave spellbook.

Orbist

 * Passive: Orb Eater, Orb Pendant
 * Collect 3 Orb Eater Orbs in one run.

Risker

 * Random
 * Talk to Pauliver after reaching the first boss. Possibly does not work with Baby equipped?

Rogue

 * Power: Grappling Hook, Thieves Tools
 * Get 9 power orbs? That didn't work for me.

Soldier

 * Blasting Bracer, Fireball Spellbook
 * Complete or skip the tutorial.

Thane

 * Passive: Lightning Rod, Passive: Shocking Feedback, Lightning Spellbook
 * Collect 3 Lightning Rod / Shocking Feedback orbs (can mix & match) in one run.

Thug

 * Passive: Power Attack, Heavy Blasting Bracer
 * Have the Heavy Gauntlet and 3 Power Attack orbs equipped.

Warlord

 * Passive: Arc Pet Affinity, Pet Armor
 * Collect 3 Arc Pet / Iron Pet Affinity Orbs (can mix & match) in one run.

Wind

 * Power: Gust, Flying Boots
 * Collect Gust and 2 Upgrade Orbs.

Wizard

 * Cursed Dagger, Cursed Dimitri's Chaos Spellbook, Cursed Mana Stone
 * Equip a cursed book of Dimitri's Chaos
 * }

Other Cards
{| class="article-table" !Card Name !Difficulty !Effect !How to Unlock

Ace

 * Easier
 * Gain a swordsman ally upon reaching 1 heart
 * Buy from shop for 800 zenny.
 * Ancient
 * Balanced
 * Heroes replace some monsters
 * Kill many (?) hero monsters.
 * Kill many (?) hero monsters.

Austere

 * Harder
 * All starting equipment is cursed, but find better loot
 * Equip 3 cursed items at the same time.

Baby

 * Easier
 * Extra hearts, zenny, and exp. Beating the game with this equipped gives an alternate ending.
 * Talk to Pauliver.
 * Brazen
 * Harder
 * More hero monsters spawn
 * Kill a hero (gold) monster.
 * Kill a hero (gold) monster.

Calm

 * Easier
 * Extra time on each floor
 * Run out of time on a floor, then live for 10 seconds. Might be being on a floor with many fireballs.

Death

 * Harder
 * Face more powerful enemies
 * Beat The Lady in Black on floor 10.

Demon

 * Balanced
 * Find extra treasure, but a demon hunts you.
 * Kill a Demon in the first boss room or from the Jackal card.

Fetters

 * Harder
 * Extra knockback but move slower.
 * Stand in the aura of the golem enemy.

Friends

 * No friendly fire damage.
 * Kill the other player during co-op play.
 * Kill the other player during co-op play.

Hero

 * Harder
 * Stronger monsters.

Holiday

 * Easier
 * Easier Floors.
 * Complete or skip the tutorial.

Insanity

 * Harder
 * Regen MP. Max health is 1.
 * Run out of time on a floor, live for X seconds ???

Jackal

 * Harder
 * The Jackal watches you.
 * Use 4-5? potions of the jackal in a run.

Maverick

 * Harder
 * Harder Floors.
 * Complete or skip the tutorial.

Midas

 * EXP becomes zenny.
 * EXP becomes zenny.

Poverty

 * Balanced
 * Zenny becomes EXP.
 * Buy from shop for 1200 zenny. Located in secret room to right of shop keeper.

Scholar

 * Easier
 * Better, but fewer, skill orbs. Gives a second identical orb for every orb consumed, but orbs no longer spawn on floors. Orbs are still available in the shop and the orb pendant will still spawn 1 orb per floor.
 * Consume 12 orbs in one run.

Slime

 * Balanced
 * Extra slimes and extra items.
 * Found on a floor infested with Slimes.

Stalwart

 * Easier
 * No knockback when taking damage.

Swarm

 * Harder
 * Gain a pet swarm, can't use weapons.
 * Have a large amount of pets alive at the same time.

Trader

 * Special relationship with a special lady.
 * Make 20 trades with Sai.
 * Make 20 trades with Sai.

Trap
Chaos Cards in game:
 * Balanced
 * More traps, less other stuff.
 * In the first boss room.
 * }

Midas

???

Wizard

Poverty