Daggers are very fast and lightweight weapons in Elden Ring: Nightreign. They excel in close-quarters combat, allowing rapid strikes and quick status buildup like Bleed or Poison, and are solid choice for builds centered around that. While their range and poise damage are limited, daggers are ideal for critical hits and backstabs, as they typecally have higher critical damage number.
NightreignDaggers - Nightreign Wiki

Black Knife
Dagger • Lvl Required 7
Weapon Skill: Blade Of Death
Unleash the power of the Rune of Death to fire off a blade-like projectile. In addition to dealing immediate damage, the blade reduces the enemy's maximum HP and continues to wear down HP for a while.
Dagger once belonging to one of the assassins who murdered Godwyn the Golden on the Night of the Black Knives. A ritual performed on the oddly misshapen blade imbued it with the power of the stolen Rune of Death.

Blade Of Calling
Dagger • Lvl Required 7
Weapon Skill: Blade Of Gold
Leap into the air, charging the armament with golden flames that are then shot at the enemy as a single, blade-like projectile. Inflicts holy damage.
Dagger given to one who set out on a journey to fulfill her duty long ago. The power of its former owner, the kindling maiden, is still apparent. The one who walks alongside flame, Shall one day meet the road of Destined Death.

Bloodstained Dagger
Dagger • Lvl Required 3
Weapon Skill: Quickstep
Skill prized by the crafty and fleet of foot. Perform a quickstep maneuver that allows for circling around lock-on targets.
Dagger with a bloodstained blade. Afflicts targets with blood loss. As blood darkened the dagger through repeated slashing and stabbing, its blade only grew sharper and harder.

Celebrant's Sickle
Dagger • Lvl Required 3
Weapon Skill: Quickstep
Skill prized by the crafty and fleet of foot. Perform a quickstep maneuver that allows for circling around lock-on targets.
Sickle decorated with flowers and many-coloured fabrics. Ceremonial tool used by dancers during the festivities of Dominula. Its attacks can slip through an enemy's guard. Crafted from human bone.

Cinquedea
Dagger • Lvl Required 7
Weapon Skill: Quickstep
Skill prized by the crafty and fleet of foot. Perform a quickstep maneuver that allows for circling around lock-on targets.
Short sword given to high ranking clergymen of Farum Azula. The design celebrates a beast's five fingers, symbolic of the intelligence once granted upon their kind.

Crystal Knife
Dagger • Lvl Required 3
Weapon Skill: Quickstep
Skill prized by the crafty and fleet of foot. Perform a quickstep maneuver that allows for circling around lock-on targets.
A knife made by sharpening hard crystal. Signature weapon of glintstone miners. Used as a tool to extract glintstone from broken rock, and as such a faint magic enwreathes the blade.

Dagger
Dagger • Lvl Required 1
Weapon Skill: Quickstep
Skill prized by the crafty and fleet of foot. Perform a quickstep maneuver that allows for circling around lock-on targets.
A standard dagger with a straight blade. Though modest in reach and capacity for harm, this weapon is light enough to jab in rapid succession and delivers devastating critical hits.

Duchess' Dagger
Dagger • Lvl Required 1
Weapon Skill: Magic Dagger
Slash with magic-enwreathed blade. The magic coating lasts for some time.
A dagger carried by the Duchess known to symbolize the virtue of her family. Though she was not born into her adopted house, she was welcomed into it with open arms. And though unrelated by blood, the nobility and righteousness of her clan took root within her heart.

Erdsteel Dagger
Dagger • Lvl Required 3
Weapon Skill: Quickstep
Skill prized by the crafty and fleet of foot. Perform a quickstep maneuver that allows for circling around lock-on targets.
An erdsteel dagger with a grass crest engraved upon its blade. Carried by the Erdtree royalty for self-defense in times of peace. Though forged to a high standard, the weapon is difficult to wield.

Glintstone Kris
Dagger • Lvl Required 7
Weapon Skill: Glintstone Dart
Skill that builds from the Glintstone Pebble sorcery. Charge the skill to upgrade it to Glintstone Dart. Follow up with a strong attack to chain this skill into a lunging thrust.
Ritual blade once presented to Leyndell by the Academy of Raya Lucaria to celebrate their newfound peace. Though the weapon is embedded with precious glintstones and features Erdtree ornamentation, the undulating blade is symbolic of an ancient ritual.

Great Knife
Dagger • Lvl Required 1
Weapon Skill: Quickstep
Skill prized by the crafty and fleet of foot. Perform a quickstep maneuver that allows for circling around lock-on targets.
Large knife with a broad, curved blade. This weapon is designed to slash and rend, inflicting blood loss upon the recipient.

Ivory Sickle
Dagger • Lvl Required 3
Weapon Skill: Quickstep
Skill prized by the crafty and fleet of foot. Perform a quickstep maneuver that allows for circling around lock-on targets.
Sickle fashioned from ivory. Weapon carried by aged Albunaurics. These weapons are evidence of their dedication to the Haligtree, despite never having entered its presence.