From Dark and Darker Wiki

Artifacts are base weapons that have special models, names, stats, and effects.

Arming Sword

Kuma's Claw.png
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Physical Base Weapon Damage 40~41
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Move Speed -20
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Up to 5 extra enchantments
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Successful weapon attacks deal 15 Dark Dark Magical Base Damage (100% Scaling).
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Required Class:
Weapon Type:
Sword
Slot Type:
Main-Hand
Hand Type:
One Handed
Hitbox:
48.46x8.86x1.98
1x3InvSlot.jpg
Gear Score:
125
Sell Price:
90
Item Achieve:
30
Forged from the flames of a mighty black dragon, this sword claws at the target's soul, inflicting lethal damage.

Falchion

Kuma's Fang.png
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Physical Base Weapon Damage 46~47
-
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Move Speed -25
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Up to 5 extra enchantments
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Successful weapon attacks deal 15 Dark Dark Magical Base Damage (100% Scaling).
-
Required Class:
Weapon Type:
Sword
Slot Type:
Main-Hand
Hand Type:
One Handed
Hitbox:
48.98x9.57x2.3
1x3InvSlot.jpg
Gear Score:
125
Sell Price:
90
Item Achieve:
30
Seems the great black dragon has lost a tooth... No matter, it will continue its bloody purpose.

Longsword

Fulgor.png
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Physical Base Weapon Damage 51~52
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-
Move Speed -30
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Up to 5 extra enchantments
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Gain 10% Action Speed. Successful weapon attacks summon a thunderbolt to strike the target dealing 20 Lightning Lightning Magical Base Damage (100% Scaling) and causing them to suffer -20% Move Speed Bonus for 1 second.
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Required Class:
Weapon Type:
Sword
Slot Type:
Main-Hand
Hand Type:
Two Handed
Hitbox:
80.41x17.14x2.42
1x4InvSlot.jpg
Gear Score:
175
Sell Price:
120
Item Achieve:
40
Long ago, a King was gifted this artifact by someone who valued his sense of dream, justice, love and kindness, hoping to help him carve these principles into the world.

Rapier

Viola.png
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Physical Base Weapon Damage 32~33
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Move Speed -15
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Up to 5 extra enchantments
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Successful weapon attacks deal 10 Ice Ice Magical Damage (100% Scaling), and frostbites the target for 2 seconds, causing them to suffer -20% Move Speed Bonus and -20% Action Speed
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Required Class:
Weapon Type:
Sword
Slot Type:
Main-Hand
Hand Type:
One Handed
Hitbox:
55.58x13.34x6.92
1x3InvSlot.jpg
Gear Score:
125
Sell Price:
90
Item Achieve:
30
The chill of winter flows in the wake of this icy blade. Gifted from the Winter Fae who wanted to prove there is nothing stronger than the cold bite of their domain.

Short Sword

Bloodsap Blade.png
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Physical Base Weapon Damage 31~32
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Move Speed -15
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Up to 3 extra enchantments
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Dealing physical damage to an enemy heals you for 1 Magical Base Healing (0% Scaling)
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Required Class:
Weapon Type:
Sword
Slot Type:
Off-Hand
Hand Type:
One Handed
Hitbox:
37.48x7.61x1.34
1x3InvSlot.jpg
Gear Score:
42
Sell Price:
80
Item Achieve:
9
A dark ritual imbued this sword with the essence of a vampire's curse. This blade not only cuts flesh but siphons the spirit, feeding its master with each drop of blood spilled.

Methods of Obtaining Artifacts in High Roller

A few of these used to be ground loot but now have been moved into containers in their respective rooms, the drop chance remains.
All of this information is up to date for HF #53 but not Patch:6.7#Hotfix 80-2 and assumes 0 Luck. The concepts remain the same, but the numbers won't be adjusted every hotfix.


Hoard
Hoard Weapon/Armor/Accessories Drop Rate is 20.5% Uncommon, 68.65% Rare, 10% Epic, 0.75% Legendary
There is 0% chance to hit an Artifact
So overall the Hoard has a 0% chance to drop an Artifact per hit

Cave Troll 0.1% chance(1 in 1000 kills)

Cyclops 0.1% chance(1 in 1000 kills)

Banshee 0.1% chance(1 in 1000 kills)

Spectral Knight 0.1% chance(1 in 1000 kills)


Skull Key Room
Skull Key room weapon's Drop Rate is ?% Epic, ?% Legendary, ?% Unique So overall the Skull room has a 3% chance to drop an Artifact per hit

Note: Frozen Iron Key Room has the same odds as the Skull Key Room.(but don't have ?% Unique ) So overall the Frozen Iron Key Room has a 1.5% chance to drop an Artifact per hit



Golden Key Room
Golden Key room weapon's Drop Rate is ?% Epic, ?% Legendary, ?% Unique So overall the Golden room has a 0% chance to drop an Artifact per hit


Mystic Gem Room
Mystic Gem room weapon spawn's Drop Rate is ?% Epic, ?% Legendary
So overall the Mystic Gem has a 0.12% chance to drop an Artifact per hit


Dual Boss Treasure Room
Double Boss room ground loot's Drop Rate is ?% Epic, ?% Legendary. (for the weapon)
So overall the Dual Boss Treasure (weapon) room has a 0.08% chance to drop an Artifact per hit


Inferno Bosses (Lich)
Lich's Weapon/Armor/Accessories Drop Rate is ?% Epic, ?% Legendary, ?% Unique Different bosses may have different amounts of artifacts to total items on the table. Currently each "Hell" boss has 5 Artifacts in their respective loot table
Technically 1% chance per loot roll for Artifacts
But the lich rolls this drop table 3 times
So overall the Lich has a 3% chance to drop an Artifact per kill


Abyss Bosses (Wyvern)
Lich's Weapon/Armor/Utilities Drop Rate is ?% Epic, ?% Legendary, ?% Unique Different bosses may have different amounts of artifacts to total items on the table. Currently each "Hell" boss has 5 Artifacts in their respective loot table
Technically 0.5% chance per loot roll for Artifacts
But the Frost Wyvern rolls this drop table 3 times
So overall the Frost Wyvern has a 1.5% chance to drop an Artifact per kill


Math for "At Least One in N trials"
For the chance at an Artifact appearing after multiple trials is (1 - ((V)^N)) x 100 = C
V is chance of failure, N is number of trials - aka, how many times you "hit" or roll the event, and C is your answer in percentage format of getting 1 or more Artifacts

You can also write V as (1 - P), P being the probability of the event happening (1 - ((1-P)^N)) x 100 = C

What the formula is doing is taking your chance of not getting an artifact x times in a row and subtracting it from 100%, this formula does NOT calculate your chance of getting 1 artifact, it calculates your chance of getting 1 OR MORE artifacts

Example
(1 - ((1055/1075)^15)) x 100 = C is the formula for 15 runs at the mystic gem room,
After 15 tries you chance of getting 1 or more Artifacts from the room would be 24.55%.

15 runs of skull key would be (1 - ((410/430)^15)) x 100 = C
51.052% of getting one or more Artifacts

15 runs of Lich would be (1 - ((10591/10600)^15)) x 100 = C

1.266% of getting one or more Artifacts


Math for "R in N trials"
(N! / R! (N-R)!) * (P^R) * ((1-P)^(N-R)) * 100

The probably of getting a SPECIFIC number of artifacts R (number of artifacts)
in N trials with
P as the probability

Example
Getting exactly 2 artifacts from the gem room in 18 trials would be

(18! / 2! (18-2)!) * ((20/1075) ^ 2) * ((1055/1075)^16) * 100 = 3.921%