Strength
Source Statistics: Strength, Weapon Skill
Conversion Logic: This statistic unifies raw physical power with martial training. In the target system, a character's ability to lift heavy ordnance is intrinsically linked to their capacity to wield it effectively in melee combat. A high score here represents an operative capable of forcing open airlock doors, bracing heavy weapons, and engaging enemies with chainswords or power hammers.
Dexterity
Source Statistics: Agility, Ballistic Skill
Conversion Logic: This attribute amalgamates hand-eye coordination, reaction times, and fine motor skills. By combining general agility with ballistic training, Dexterity becomes the primary governor for ranged combat accuracy and delicate machine manipulation. It dictates the precision required to snipe a target at range or disable a complex trap mechanism without triggering it.
Constitution
Source Statistics: Toughness
Conversion Logic: A direct measure of physical resilience and biological hardiness. This stat defines the character's ability to withstand the toxic environments of the underhive, resist biological agents, and survive grievous bodily trauma. It represents the sheer grit required to remain conscious and functional when the body is failing.
Intelligence
Source Statistics: Intelligence
Conversion Logic: This metric maps the character's capacity for deductive reasoning, memory retention, and data processing. It governs all interactions with cogitators, the understanding of complex cyphers, and technical knowledge. High Intelligence reflects a mind sharpened by the logic of the Machine God or the bureaucracy of the Administratum.
Wisdom
Source Statistics: Perception, Willpower
Conversion Logic: A critical combination of sensory awareness and mental fortitude. By merging the ability to notice threats with the will to resist them, Wisdom represents the character's defence against the Warp. It governs intuition, the ability to spot ambushes, and the mental steel required to face the horrors of the dark galaxy without breaking.
Charisma
Source Statistics: Fellowship
Conversion Logic: This statistic represents the sheer force of personality and leadership capability. It covers the full spectrum of social interaction, from diplomatic negotiation to terrifying interrogation. A character with high Charisma can command Imperial troops, extract confessions from heretics, or navigate the treacherous social courts of the nobility.
Armor Class
Source Statistics: Agility
Conversion Logic: While physical armour plating is a factor, the base calculation is derived primarily from Agility. This reflects the tactical reality that evasion is superior to mitigation. A high rating here indicates a character trained to utilise cover effectively, dodge incoming fire, and maintain defensive posturing in a firefight.
Max HP
Source Statistics: Toughness
Conversion Logic: Hit Points are treated as an abstraction of structural integrity. Consequently, this is derived exclusively from the Toughness characteristic. A character with a high score here possesses a denser physical frame, redundant biological systems, or the sheer willpower to ignore pain, allowing them to sustain significant damage before incapacitation.
Speed
Source Statistics: Agility
Conversion Logic: This derivative stat governs the raw rate of movement across the battlefield. Based on Agility, it determines tactical mobility, defining how quickly an operative can close the distance for a melee engagement or retreat to hard cover when under suppressing fire.
Acrobatics
Source Skills: Acrobatics, Dodge
Conversion Logic: This skill governs movement through three-dimensional space and reactive evasion. It consolidates the ability to tumble through ventilation shafts, balance on hive city catwalks, and dive clear of explosive blasts. It is the primary skill for navigating hazardous terrain that requires agility rather than raw strength.
Animal Handling
Source Skills: Survival
Conversion Logic: This specific application of survival training focuses on the control of beasts. It covers the ability to calm aggressive local fauna, ride terrestrial mounts, or issue commands to cyber-mastiffs. It represents an intuitive connection with the primitive or bestial elements of a world.
Arcana
Source Skills: Forbidden Lore, Psyniscience
Conversion Logic: As magic is synonymous with the Warp, this skill encompasses all knowledge of the Immaterium. It combines academic knowledge of Chaos and Daemonology with the practical ability to sense psychic phenomena. Proficiency here indicates an understanding of the dark rules that govern sorcery and the Empyrean.
Athletics
Source Skills: Athletics, Parry
Conversion Logic: This skill aggregates all feats of physical power and conditioning. It governs climbing manufactorum walls, swimming through sump reservoirs, and the strength required to parry melee blows. It reflects a physique conditioned for strenuous labour and close-quarters struggle.
Deception
Source Skills: Deceive
Conversion Logic: The art of the lie and the maintenance of false fronts. This skill is utilised for infiltrating cults, establishing cover identities, and misleading local authorities. It covers everything from a quick fabrication to avoid arrest to a long-term deep cover operation within a heretical cell.
History
Source Skills: Common Lore, Linguistics, Scholastic Lore
Conversion Logic: This broad category encompasses the Acolyte's academic education and historical knowledge. It includes the recollection of Imperial records, the deciphering of High Gothic or dead languages, and general knowledge regarding the history of the Imperium's sectors and expanses.
Insight
Source Skills: Scrutiny, Tech-Use
Conversion Logic: The skill of reading beneath the surface. This combines the ability to detect lies in a human subject with the ability to diagnose faults in a machine spirit. Whether analysing a suspect's micro-expressions or interpreting the error runes of a cogitator, this skill governs deep assessment.
Intimidation
Source Skills: Command, Interrogation, Intimidate
Conversion Logic: The application of fear as a tool for control. This proficiency consolidates the ability to command troops through authority, extract truths through the promise of pain, or coerce civilians through the threat of violence. It reflects the ability to dominate a social situation through presence alone.
Investigation
Source Skills: Inquiry, Logic
Conversion Logic: The primary toolset for detective work. This skill merges the "soft" gathering of rumours and street-level questioning with the "hard" application of deductive logic. It is used to analyse crime scenes, connect disparate clues, and track down elusive targets through information gathering.
Medicine
Source Skills: Medicae
Conversion Logic: A direct mapping for the healing arts and biological maintenance. This covers battlefield chirurgy, the administration of stimms, and the treatment of complex toxins. Proficiency here dictates the character's ability to keep their team operational and stabilise critical injuries in the field.
Nature
Source Skills: Navigate, Survival
Conversion Logic: Knowledge regarding the natural world outside the hive cities. This covers the identification of xenos flora, the understanding of planetary weather patterns, and the navigation of dense, organic terrain. It represents the knowledge required to identify environmental hazards before they become lethal.
Perception
Source Skills: Awareness
Conversion Logic: The passive ability to notice sensory details. Unlike active investigation, this skill governs the chance to hear a snapping twig, smell a chemical leak, or spot the glint of a sniper's scope. It acts as the character's constant radar against hidden threats and ambushes.
Performance
Source Skills: Charm
Conversion Logic: This aspect of social interaction focuses on addressing crowds and theatrics. It governs the delivery of oratory speeches, the performance of distraction techniques, and the execution of social rituals. It is the primary skill for demagogues, preachers, and undercover agents creating a scene.
Persuasion
Source Skills: Charm, Commerce, Trade
Conversion Logic: The art of achieving goals through agreement and diplomacy. This consolidates general charm, commercial negotiation, and the understanding of value. It is used to broker treaties, bribe guards, negotiate contracts with Rogue Traders, and navigate mercantile disputes.
Religion
Source Skills: Common Lore, Scholastic Lore
Conversion Logic: Specific theological knowledge regarding the Imperial Creed. This separates dogmatic understanding from general history. It covers knowledge of Saints, the Ecclesiarchy's hierarchy, correct ritual observance, and the identification of minor heresies against the Ministorum.
Sleight Of Hand
Source Skills: Operate, Security, Sleight of Hand
Conversion Logic: This skill represents manual dexterity and fine motor control. It combines the ability to pick pockets and bypass security locks with the manual operation of vehicles. Piloting is treated here as a test of reflex and hand manipulation rather than intellectual understanding.
Stealth
Source Skills: Stealth
Conversion Logic: The ability to remain undetected by visual or auditory means. This covers moving silently in shadows, blending into crowds, and the tactical discipline required to avoid patrols. It is the essential proficiency for snipers, assassins, and covert infiltrators.
Survival
Source Skills: Navigate, Survival
Conversion Logic: The practical application of enduring hostile environments. While 'Nature' provides knowledge, 'Survival' provides the capability to endure. It covers foraging for resources, finding shelter in wastelands, and navigating trackless expanses where no maps exist.