diff --git a/core/src/main/kotlin/com/willfp/libreforge/conditions/Conditions.kt b/core/src/main/kotlin/com/willfp/libreforge/conditions/Conditions.kt
index 059e71957..c56fdf2ae 100644
--- a/core/src/main/kotlin/com/willfp/libreforge/conditions/Conditions.kt
+++ b/core/src/main/kotlin/com/willfp/libreforge/conditions/Conditions.kt
@@ -23,6 +23,7 @@ import com.willfp.libreforge.conditions.impl.ConditionBelowXPLevel
 import com.willfp.libreforge.conditions.impl.ConditionBelowY
 import com.willfp.libreforge.conditions.impl.ConditionCanAffordPrice
 import com.willfp.libreforge.conditions.impl.ConditionGlobalPointsEqual
+import com.willfp.libreforge.conditions.impl.ConditionHasCompletedAdvancement
 import com.willfp.libreforge.conditions.impl.ConditionHasItem
 import com.willfp.libreforge.conditions.impl.ConditionHasItemData
 import com.willfp.libreforge.conditions.impl.ConditionHasPermission
@@ -206,5 +207,6 @@ object Conditions : Registry<Condition<*>>() {
         register(ConditionHasItemData)
         register(ConditionItemDataEquals)
         register(ConditionIsOp)
+        register(ConditionHasCompletedAdvancement)
     }
 }
diff --git a/core/src/main/kotlin/com/willfp/libreforge/conditions/impl/ConditionHasCompletedAdvancement.kt b/core/src/main/kotlin/com/willfp/libreforge/conditions/impl/ConditionHasCompletedAdvancement.kt
new file mode 100644
index 000000000..5b746e841
--- /dev/null
+++ b/core/src/main/kotlin/com/willfp/libreforge/conditions/impl/ConditionHasCompletedAdvancement.kt
@@ -0,0 +1,36 @@
+package com.willfp.libreforge.conditions.impl
+
+import com.willfp.eco.core.config.interfaces.Config
+import com.willfp.eco.util.containsIgnoreCase
+import com.willfp.eco.util.safeNamespacedKeyOf
+import com.willfp.libreforge.Dispatcher
+import com.willfp.libreforge.NoCompileData
+import com.willfp.libreforge.ProvidedHolder
+import com.willfp.libreforge.arguments
+import com.willfp.libreforge.conditions.Condition
+import com.willfp.libreforge.get
+import org.bukkit.Registry
+import org.bukkit.advancement.Advancement
+import org.bukkit.entity.LivingEntity
+import org.bukkit.entity.Player
+
+object ConditionHasCompletedAdvancement : Condition<NoCompileData>("has_completed_advancement") {
+    override val arguments = arguments {
+        require("advancement", "You must specify the advancement!")
+    }
+
+    override fun isMet(
+        dispatcher: Dispatcher<*>,
+        config: Config,
+        holder: ProvidedHolder,
+        compileData: NoCompileData
+    ): Boolean {
+        val player = dispatcher.get<Player>() ?: return false
+
+        val advancement = Registry.ADVANCEMENT.get(
+            safeNamespacedKeyOf(config.getString("advancement")) ?: return false
+        ) ?: return false
+
+        return player.getAdvancementProgress(advancement).isDone
+    }
+}