Humans

Humans from the game, with info about their strengths, weaknesses and tactics.

Stat values given below for hp are unofficial estimates derived from analyzing battle log figures in Build 0.6.0.21. Melee and Ranged Defense stats are inferred from comparing known Melee/Ranged Skill for brothers with the to-hit % displayed on mouseover.

The 1.1 update for the fully released game has given us enemy to-hit rolls in addition to friendly to-hit rolls and the enemy sections will be slowly updated with new info regarding estimated enemy melee skill and ranged skill. Credits to Laiseurjika and 千仞万渊 for helping with the tests.

Enemies do not level and should have same stats. However defense incurs diminishing returns at 45, which complicates melee skill assessments. Also certain mobs (i.e. Knights) may have partially randomized perks to reflect their very own experiences, strengths and weaknesses in combat.

Brigands

Brigand Thug
Strengths Usually fight in large groups, dangerous in early game and when player is outnumbered.
Weaknesses Rather low hp (about 55) No base melee defense bonus (0) No base ranged defense bonus (0) Mediocre melee skill (about 55) Light armor. Typical armor include leather wraps (20), leather tunic (30) Weak weapons.
Tactics Form a shield wall and weaken them with archers from behind. Armored brothers with two-handed weapons will devastate them and have survivors fleeing. Spearwall spam can be useful, though the thugs will usually wait until they are all in position before attempting a mass charge. Rotating which brothers are using spearwall can conserve fatigue.

Brigand Poacher
Strengths Usually fight together with raiders and thugs. Sometimes will have wardogs. As with all ranged weapons, can wreak havoc on lightly armored brothers.
Perks Rotation(?), Recovery.
Weaknesses No base melee defense bonus (0) No base ranged defense bonus (0) Mediocre ranged skill (about 50) Mediocre melee skill (about 50) Does not have the "Bullseye" perk. Does not have mastery of either bows or crossbows.
Tactics Outgun them with your archers. Use dogs to distract them.

Brigand Raider
Strengths Decent hps (about 75) Respectable base melee defense bonus (+10). Some raiders, especially in the early game, may only have +5 Respectable base ranged defense bonus (+10). Some raiders, especially in the early game, may only have +5 Respectable melee skill. Typical values hover around 70 Melee Skill but it can easily be 65 in the early game. Typically have 55 ranged skill when switching to thrown weapons (ie javelins) Usually fight in larger groups together with Brigand Marksmen. Sometimes have throwing weapons like Javelins or Throwing Axes. Relatively strong weapons. Typical weapons include all mid tier weaponry (falchion, handaxe, morning star, flail, boar spear, warbrand, hooked blade, pike, etc) Medium to strong armor. Typical armor include rusty mail coif (70), padded leather (80), patched mail (90), leather lamellar (95), worn mail (110). Rugged Surcoat (55) is also occasionally seen. Have Rotation perk and can use it to rescue wounded/fleeing brigands.
Perks Rotation, Recovery, Mastery of appropiate Weapon.
Weaknesses Easily provoked into charging.
Tactics If they do not charge instantly, kill their Marksmen with your Ranged Brothers and as a result force them to charge. Then weaken them with your Ranged Brothers and form a shield wall. If they do not charge even after their Marksmen are killed, try to move a Brother on one of their wings, they will loosen their formation and you can charge in. Can be easily provoked into moving to attack your brothers, limiting them to one strike and leaving your brothers fresh to attack twice. Placing a brother with two spaces between them and a brigand is effective.

Brigand Marksman
Strengths High initiative and light armor means they will frequently act before most of your brothers. Respectable base ranged defense bonus (+10) Decent ranged skill (about 60) Sometimes carries a Wardog. Have mastery perk of their respective ranged weapon. Dangerous in the early game, when they can wound and kill your lightly armored brothers easily.
Perks Bullseye, Rotation, Recovery, Bow and Crossbow mastery.
Weaknesses Rather low hp (about 50-55) Mediocre base melee defense bonus (+5) Mediocre melee skill (about 50) Low to medium armor. Typical armor include leather wraps (20), padded surcoat (50), blotched gambeson (70)
Tactics Try to take them out with your ranged Brothers. Flank their battle line and engage them in melee, if possible. Frequently left exposed when their melee counterparts charge, leaving them vulnerable to ranged fire.

Brigand Leader
Strengths High hps (roughly 100-125, variability might be due to Colossus perk) High base melee defense (+15). Has Shield Expert perk, putting defense at +18 with regular shields. High base ranged defense (+15). Shield Expert benefits applicable as above. High melee skill (about 75) Decent ranged skill (about 60) Usually uses Heavy armor. Typical armor include nasal helm with mail (200), basic mail (110), reinforced mail hauberk (210) Powerful weapons. Top tier weaponry including noble sword, winged mace, fighting axe, greatsword, etc. Sometimes carry unique weapons. Inspires nearby brigands.
Perks Shield Expert, Colossus, Rotation, Recovery, Overwhelm, Nine Lives.
Weaknesses Tend to stay isolated from other NPCs. Sometimes charges first. Has a bug where when two brigand leaders are present, they can have the same name and title.
Tactics If the leader charges at you, focus fire with ranged weapons. If isolated, eliminate other brigands first and take care of the Leader last. Often one of the last brigands on the field. Surround and crippple them before finishing them off. They often have some relatively high tier armor and helmets. Surrounding them and using daggers' "Puncture" skill can net you decent gear.

Noble House Forces

Billman
Strengths Medium Armor. Uses polearms like the Pike and Billhook. Readily uses Repel to protect their vulnerable units and Hook to draw enemies into being surrounded, if they have the appropriate weapon. Stays in formation and deals high damage from the back row.
Perks Fast Adaptation, Rotation, Reach Advantage, Polearm Mastery.
Weaknesses Outside of the formation they get damaged quite fast due to light armor, mediocre Melee/Ranged Defense skills and not possessing a shield.
Tactics Will occasionally use the Hook skill with Billhooks to inflict your mercs with the Stagger debuff Since they have no shields, they are very vulnerable to all attacks that can reach them. Kite them by always ending your turn 3 tiles away, so they can't move and attack in the same turn.

Footman
Strengths Mid-tier weapons like Falchion, Military Pick, Morning Star, Arming Sword Heaters and Kite Shields Medium to strong armor. High Resolve, don't suffer from morale loss easily.
Perks Shield Expert, Fast Adaptation, Rotation, Recovery
Weaknesses They are not great damage dealers and will often spam 'Shieldwall' and get exhausted.
Tactics Break their armor with hammers, or use flails to hit them over their shields.

Arbalester
Strengths Strong crossbows, sometimes will carry a Heavy Crossbow Medium Armor. Decent Ranged Skill and Ranged Defense and can be difficult to target as they like to stand behind friendly units. They have Arbalest Mastery Perk, which will result in great damage when it hits.
Weaknesses Weak in melee fights. Tend to mainly stay at the wings of the formation.
Tactics Archer with Bow Mastery can try to shoot them without having to move. Can be distracted for a few turns with wardogs.

Standard Bearer
Strengths Medium to strong armor. Is able to use the rally the troops perk. Usually stays in safe position within the formation.
Weaknesses No shields. Will always attempt to rally if there are any frienlies below steady morale, instead of attacking. Lower encumbrance and higher initiative sometimes causes him to charge first and therefore is a good target for your first shots.
Tactics Try to shoot them Leave him for last if there

Knight
Strengths Top tier armor like plate mail (320), coat of scales (300), full helm (300), decorated full helm (300). Top tier weapons like Fighting Axe and Noble Sword. Sometimes carry unique weapons and shields
Perks Fast Adaptation, Shield Expert, Overwhelm.
Weaknesses Gets fatigued quite fast.
Tactics Surround him and break his shield, use maces to stunlock him then finish him off. Surround him and use dagger "Puncture" skill to save his armor.

Sergeant
Strengths Top-tier Armor. Top-tier Weapons. High Melee Attack and Defence.
Perks Fast Adaptation, Nimble, Duelist, Steel Brow, Weapon Mastery.
Weaknesses No head armor. No shields
Tactics Surround him, throw nets and use flails to hit them in the head.

Zweihander
Strengths Top-tier Armor. Two Handed Sword. High Melee Attack and Defence. High Initiative
Perks Reach Advantage, Steel Brow, Sword Mastery, Anticipation, Overwhelm, Berserker, Lone Wolf.
Weaknesses Poor head armor. No shields
Tactics Throw nets and use mace to stun him because surrounding him a letting him attack grant stacks of Reach Advantage with make it harder to hit.

Militia Forces

Militia
Strengths Usually fight in larger groups together with Militia Marksmen.
Weaknesses Lowest tier armour Usually bottom tier weapons, but can sometimes have stronger ones, never top tier. 50 HP. Tend to instantly charge the enemy. 50 melee skill No perks
Tactics

Militia Veteran
Strengths Medium armor. Medium weapons.
Weaknesses Are often alone together, with other Militias.
Tactics

Militia Captain
Strengths Medium to strong armor. Medium to strong weapons. Can use "Rally the Troops" perk.
Weaknesses
Tactics

Militia Marksman
Strengths Ranged Weapons Carry a dagger, maybe Something else (need more samples)
Weaknesses No crossbows Lowest tier armour 50 HP 50 Range Skill 0 Range and Melee defense No perks
Tactics

Trading Caravans

Caravan Hand
Strengths
Weaknesses Tend to instantly charge the enemy or leave the formation and stand next to the caravan donkey.
Tactics

Caravan Guard
Strengths Medium armor Medium weapons Has "Shield Expert" perk.
Weaknesses Tend to instantly charge the enemy or leave the formation and stand next to the caravan donkey.
Tactics

Peasant
Strengths They sometimes carry a Pitchfork.
Weaknesses Low or no armor. Low HP. No weapons besides their fists.
Tactics Crush them, it is impossible to lose a fight against them (ss long as you are not totally undergeared, injured and/or outnumbered.)

Mercenary Companies

Mercenary
Strengths In the full release version 1.1.0.8, although they are all named 'Mercenary', this is a complicated group of non-homogenous units with at least 3 different "types", each likely with a different set of stats and a different set of likely gear. At least 1 type appears to have roughly the same stats as Brigand Raiders (70 Melee Skill and 10 base Melee Defense). Another type has roughly 75 Melee Skill and the final type possibly even higher. Ranged Defense has been recorded as 10-15 and some types have Anticipation High variety of armor and weapons, ranging from light (Gambeson, Padded Leather, Headscarf) to medium/heavy armor (Mail Hauberk, Nasal Helmet with Mail, Bascinet with Mail, Flat Top with Mail) and medium to high tier weapons (Handaxe, Military Pick, Warbow). Some mercenaries are equipped with nets
Perks Fast Adaptation, Quickhands, Rotation, Overwhelm, Reach Advantage, Bullseye. Seems to have the weapon mastery of all the weapons Some "types" or variants may have Anticipation
Weaknesses Usually inconsistent armour and weapons, leaving weaker, exploitable points to begin your attack.
Tactics Focus on the high-damage, low defence mercenaries to reduce their threat. Play defensively, as they are all highly skilled Be adaptive!

Hedge Knight
Strengths Heavy armor. Typical armor include closed flat top with mail (280), , full helm (300), reinforced mail hauberk (210), heavy lamellar armor (285), coat of scales (300) Top tier weapons (sometimes unique ones). Typical weapons include noble sword, fighting axe, warbrand, greatsword, two handed hammer,etc Often uses top tier shields (ie heater shield, sometimes unique ones) High HP (may be variable due to perks, roughly 125-150) Excellent base melee defense (+25) Strong base ranged defense (+15) Very high melee skill (about 85) Strong resolve Likely to have Battle Forged perk (there are quite a few recorded instances where men did less than minimum armor damage for their given weapon)
Perks Colossus, Fast Adaptation, Overwhelm, Shield Expert, Reach Advantage, Killing Frenzy, Berserker, Battle Forged.
Weaknesses Gets fatigued quite fast. Rather low initiative (probably due to all that armor)
Tactics Engage with brother with best defense and use shieldwall. Other men should use 2-handed reach weapons and stay safely away. The Hedge Knight will likely use Shieldwall himself and hopefully not put out too much damage per turn. Warhammers can be useful as they wear heavy armor Remove armor with warhammers and then finish him with spear or any high dmg weapons Surround him and puncture him to death to save his armor.

Swordmaster
Strengths Medium armor. Fairly wide armor assortment including nasal helm (105), basic mail (110). In the full release version, swordmasters can be equipped with Reinforced Mail Hauberks. Sometimes no head armor or just a headscarf. Supremely high base melee defense (+80), which translates to an effective melee defense of 64 after diminishing returns, and which cannot be overcome by surrounding due to Underdog perk. High base ranged defense (+15), further boosted by Anticipation perk. Supremely high melee skill (about 95) Usually carries an Arming Sword/Noble Sword (Uniques are possible). Will use Riposte readily and in tandem with his high Melee Skill, trying to strike him in melee will invariably result in getting men heavily wounded or killed.
Perks Fast Adaptation, Nimble, Steel Brow, Anticipation, Duelist, Head Hunter, Underdog.
Weaknesses Fairly modest hps (about 60-70) No shields Relatively poor head armor
Tactics Shoot him when he has closed in and try to get a clear shot. An average L11 brother starting with decent ranged skill, armed with a crossbow, will only have a 45% chance at 6 tiles away.[(40 (initial) + 30 (10 level ups in Ranged Skill) + 20 (crossbow) - 15 (distance) - 15 (base ranged defense) - 15 (Anticipation)] Engage with brother with best defense and use shieldwall. Do not melee him when Riposte is active.

Master Archer
Strengths May carry a Warbow or Heavy Crossbow (Uniques are possible). Extremely High Ranged Skill (about 85) Respectable Melee Skill (about 70) High base melee defense (+15) Very High base ranged defense (+25) Good in melee fights
Perks Fast Adaptation, Bullseye, Anticipation, Head Hunter, Quick Hands, Bow and Crossbow Mastery.
Weaknesses Usually fairly light armored (Hood, Basic Mail)
Tactics Try to engage in melee as fast as possible Try to shoot them with your archers

Event-spawned special mobs

Bounty Hunter
Strengths High defense and attack values. High Initiative. Light to medium armor.Typical armor include mail hauberk (150), padded leather (80), basic mail shirt (115), closed mail coif (90), nasal helmet with mail (200). Good mix of weapons, typical weapons are dagger, falchion, hand axe, arming sword, warbow and crossbow. Often make use of nets and throwing weapons. Sometimes will have wardogs.
Perks Overwhelm, Fast Adaptation, Weapon Mastery of all weapons, Nimble, Bullseye, Quick Hands, Recovery.
Weaknesses Similar weaknesses as Mercenaries
Tactics Use nets to reduce their defenses. Make use of the "Surround" mechanic to increase hit-chance.

Cultist
Strengths Typical event spawns 25 cultists Decent hps (about 70) Decent melee skill (about 60) Decent melee defense (about 10) Decent ranged defense (about 10), however as the event occurs at night, ranged defense is lowered to 7 due to Nighttime penalty High morale High initiative
Perks Weapon Mastery (ie Daggers), Nimble, Overwhelm
Weaknesses Light armor (typically Cultist Hood and Monk's Robe) and no shields Mid tier weapons (typically Reinforced Wooden Flail, Scramasax and Daggers)