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Though KCD2 is relatively straightforward with most of the ways Henry can evolve into a better version of himself, there are things that are hidden from the player that can make you much more powerful. These secret, hidden perks are something you can get usually by completing special tasks or by doing very specific things, and they can give you stat boosts, special abilities, and much more. In this guide I’ve scoured the game files to find exactly what hidden perks exist in Kingdom Come Deliverance 2, what they do, and how to get all of them.
All Hidden Perks in KCD2
There are 11 hidden perks in the game:
Airgiyn tav

How to Unlock: Received at the end of the “Quarrel of the horse dealers” task for Mikolaj and Bibrek by siding with Bibrek or making them end their quarrel. (Likely added with the Horse Racing update, you can add this one with cheats)
Perk Effects: While mounted, gain +10% Ranged Attack and +3 Marksmanship
Category: Horsemanship
Good old Pebbles

How to Unlock: Travel 35 km while on Pebble’s back
Perk Effects: Pebbles gets a permanent +20 in Strength, Agility, and Vitality buff, which results in these overall stats: 210 Stamina, 338 Capacity, 55 Speed and 12 Courage
Category: Horsemanship
Hammerer

How to Unlock: Craft 10 blacksmithing items
Perk Effects: Reduces stamina consumption of Heavy Weapons by 10%
Category: Craftsmanship
Lab dweller

How to Unlock: Brew 20 potions
Perk Effects: Effects of potions and alcohol will last 10% longer, and hangovers will be 20% shorter
Category: Alchemy
Master strike

How to Unlock: Complete Combat Training II with Tomcat
Perk Effects: Unblockable counterattack
Category: Combat / Swords
Red Herring

How to Unlock: Travel 50 km while on Red Herring’s back
Perk Effects: Red Herring gets a permanent +15 in Strength, Agility, and Vitality buff, which results in these overall stats: 231 Stamina, 288 Capacity, 55 Speed and 14 Courage
Category: Horsemanship
Resistance

How to Unlock: Collect 200 poisonous herbs (Herb Paris, Weeds, Nettle, Belladonna, and Henbane). Can check your progress in Statistics, Craft.
Perk Effects: Gives a permanent +2 Vitality buff
Category: Survival
Skirmishing cavalry
How to Unlock: Received at the end of the “Quarrel of the horse dealers” task for Mikolaj and Bibrek by siding with Mikolaj or making them end their quarrel.
Perk Effects: +15% fast travel event detection distance, -25% visibility while fast traveling, +10% chance to evade fast travel events
Category: Horsemanship
Steak tartare

How to Unlock: Drink the Strange Potion found in Rabstein Mill ruin, north of Old Lhota (Kutenberg region). Make sure to also drink a Strong Digestive Potion to not die from poisoning (the potion is right next to the Strange Potion).
Perk Effects: You can consume raw meat without fear of food poisoning
Sticky Fingers

How to Unlock: Steal items with a total value of 10k Groschen (you can check this stat in the Crime statistics)
Perk Effects: Get extra Groschen each time you pickpocket someone and loot a body
Unarmed master strike

How to Unlock: You can’t, it’s only available to NPCs. You can unlock it using this cheat, after activating devmode: #player.soul:AddPerk(‘eaf706c8-e8f8-4175-81de-b1c1dec4e2ba’)
Perk Effects: Unblockable counterattack.




I think Skirmishing Cavalry provides these buffs (in a nutshell):
+15% fast travel event detection distance
-25% visibility while fast traveling
+10% chance to evade fast travel events
Visibility further affects Henry’s chance of evading, but the math is complicated. These conclusions are based on my interpretation of data from the KCD2 Modding Knowledge Base
vir: DerivStat_ViewRadius
vib: DerivStat_Visibility
efc: Inter_EventFleeChance
EventConcealWeightRadiusVsVisibility event concealment (how easily event detects player)
FTRadiusWeightViewRadiusVsSurvival view radius of player during fast travel (how easily player detects event)
EventEvadeWeightVisibility weight V for computing event evade chance
EventAmbushWeightVisibility weight V for computing event ambush chance
Source:
https://warhorse.youtrack.cloud/articles/KM-A-21/Stats-and-skills
https://warhorse.youtrack.cloud/articles/KM-A-20/RPG-Constants-Params