Perk concept drawings.

Perks are a type of gameplay mechanic associated with the level up system in Battle Brothers. 1 Perk point is gained with each level up. they will be able to acquire powerful perks, independently of their Attributes.

To unlock, for example, the second perk row, you need to spend one perk, to unlock the third row you need to spend two perk points. These two, however, can be used in the first perk row and you will still gain access to the third row.

After you read about what each perk does, you can use the tool "Battle Brothers Perk Calculator", made by EveryCrime. It let's you visually calculate how you can spend your perk points on a character with a certain level or how you have to progress in order to achieve the perk combinations you want.

Tier 1Edit

Bb t1
Perk Description
Perk 33   Fast Adaptation Adapt to your opponent's moves! Gain an additional stacking + 8% chance to hit with each attack that misses an opponent. Bonus is reset upon landing a hit. Note: For the purposes of a reset on ranged attacks, hitting terrain blocking the target counts as a hit and will reset the counter.
Perk 57   Crippling Strikes Cripple your enemies! Lowers the threshold to inflict injuries by 33% for both melee and ranged attacks.
Perk 06   Colossus Bring it on! Hitpoints are increased by 25%, which also reduces the chance to sustain debilitating injuries when being hit. Note: It is calculated after whatever current HP is and remains active, meaning there is nothing to gain or lose by picking it later.
Perk 07   Nine Lives Once per battle, upon receiving a killing blow, survive instead with a few hitpoints left. The next hit is likely to kill you for good, of course.
Perk 20   Bags and Belts Unlock two extra bag slots to carry all your favorite things. Items placed in bags no longer give a penalty to Maximum Fatigue, expect for two-handed weapons.
Perk 23   Pathfinder Learn to move on difficult terrain. Action Point costs for movement on all terrain is reduced by -1 to a minimum of 2 Action Points per tile, and Fatigue cost is reduced to half. Changing height levels also has no additional Action Point cost anymore.
Perk 37   Adrenaline Unlocks the 'Adrenaline' skill which costs 0 AP and 20 Fatigue to be used and puts you first in the turn order for the next round, to have another turn before your enemies do. Feel the adrenaline rushing through your veins!
Perk 54   Recover Unlocks the 'Recover' skill which allows for resting a turn (spend 9 AP) in order to reduce accumulated Fatigue by 50%.
Perk 21   Student Everything can be learned if you put your mind to it. Gain additional 20% experience from battle. At the eleventh character level, you gain an additional perk point upon and this perk becomes inert.

Tier 2Edit

Bb t2
Perk Description
Perk 16   Executioner Inflict additional 20% damage against targets that have sustained any injury effects, like a broken arm.
Perk 17   Bullseye Nailed it! The penalty to hit chance when shooting at a target that has no clear line of fire is reduced from 75% to 50% for ranged weapons. This affects an initial, separate, hidden roll which determines whether the shot hits the intended target, and only applies when the intended target has Cover. See Combat Mechanics for further details.
Perk 01   Dodge Too fast for you! Gain 15% of the character's Initiative as a bonus to Melee and Ranged Defense.
Perk 08   Fortified Mind An iron will is not swayed from the true path easily. Resolve is increased by 25%.
Perk 04   Resilient Keep it together! Any status effect with a finite duration (e.g. Bleeding, Charmed) has its duration reduced to 1 turn.
Perk 09   Steel Brow Hits to the head no longer cause critical damage to this character, which also lowers the risk of sustaining debilitating head injuries.
Perk 39   Quick Hands Looking for this? Swapping any item in battle expect for shields becomes a free action with no Action Point cost once every turn.
Perk 56   Gifted Mercenary life comes easy when you're naturally gifted. Instantly gain a levelup to increase this character's attributes with maximum rolls but without talents.

Tier 3Edit

Bb t3
Perk Description
Perk 59   Backstabber Honor doesn't win you fights, stabbing the enemy where it hurts does. The bonus to hitchance in melee is doubled to +10% for each ally, including Wardogs, surrounding and distracting your target.
Perk 10   Anticipation When being attacked with ranged weapons, gain 1 + 10% of your base Ranged Defense as additional Ranged Defense per tile that the attacker is away.
Perk 05   Shield Expert Learn to better deflect hits to the side instead of blocking them head on.

The shield defense bonus is increased by 25%. This also applies to the amplified shield bonus from the Shieldwall skill.

Additionally, shield damage received is reduced by 50% to a minimum of 1.

Give +15% chance in shield knockback skill.

Perk 40   Brawny The fatigue penalty from wearing armor and helmet is reduced by 30%, (25% with the new update).
Perk 26   Relentless Don't slow down! At all times your Initiative is reduced only by 50% of your accumulated Fatigue, instead of all of it. You also don't lose Initiative when you wait instead of ending your turn anymore.
Perk 11   Rotation Unlocks the 'Rotation' skill which costs 3 AP and 25 Fatigue to be used and allows two characters to switch places while ignoring zone of control as long as neither character is stunned, rooted or otherwise disabled.
Perk 42   Rally the Troops Unlocks the 'Rally the Troops' skill. Rally costs 6 AP, 25 Fatigue and triggers a morale check to raise morale of any ally at Wavering or worse morale within 4 tiles; with a bonus of 40% of the skill user's Resolve, and a penalty of -10 per tile of distance, to the roll. It can also rally fleeing and panicked allies.

Note: You do not need to wait for the Sargeant ambition to pick this, it will be available regardless.

Perk 38   Taunt

Unlocks the 'Taunt' skill which costs 4 AP and 15 Fatigue to be used and makes opponents take offensive actions instead of defensive ones, and attack the taunting character over another potentially more vulnerable one. Note: This only works if the taunted enemy is able to engage the taunted character, ranged or melee. And will be ignored if there is no unobstructed path.

Tier 4Edit

Bb t4
Perk Description
Perk 43   Mace Mastery Master maces to beat your opponents into submission, armored or not. Skills build up 25% less Fatigue.

Knock Out and Strike Down has a 100% chance to stun the target if not immune.

Perk 47   Flail Mastery Master flails and circumvent your opponent's shield. Skills build up 25% less Fatigue.

Lash and Hail ignores the defense bonus of shield.

Thresh gains +5% chance to hit.

Perk 53   Hammer Mastery Master hammers and fighting against heavily armored opponents. Skills build up 25% less Fatigue.

Destroy Armor and Demolish Armor inflicts 33% more damage against armor.

Shatter gains + 5% chance to hit.

Also eliminates penalty when attacking adjacent enemies with Polehammer.

Perk 44   Axe Mastery Master combat with axes and destroying shields. Skills build up 25% less Fatigue.

Split Shield damage to shields is increased by 50% when used with axes.

Round Swing gains + 5% chances to hit.

Also eliminates penalty when attacking adjacent enemies with LongAxe.

Perk 52   Cleaver Mastery Master cleavers to inflict gruesome wounds. Skills build up 25% less Fatigue.

Bleeding damage inflicted by cleavers and whips is doubled to 10 and 20 per turn, respectively. The crypt cleaver isn't affected by this.

Disarm no longer has a penalty to hit.

Perk 46   Sword Mastery Master the art of swordfighting and using your opponent's mistakes to your advantage. Skills build up 25% less Fatigue.

Riposte no longer has a penalty to hitchance.

Split and Swing gain a + 5% chance to hit.

Perk 51   Dagger Mastery Master swift and deadly daggers. Skills build up 25% less Fatigue.

Stab and Puncture now costs 3 AP to use (instead of 4) which allows for an additional attack each turn.

Perk 58   Polearm Mastery Master polearms and keeping the enemy at bay. Skills build up 25% less Fatigue.

Polearm skills have their action point cost reduced to 5, and no longer have a penalty for attacking targets directly adjacent.

Perk 45   Spear Mastery Master fighting with spears and keeping the enemy at bay. Skills build up 25% less Fatigue.

Spearwall is no longer disabled once an opponent manages to overcome it. Instead, Spearwall continues to give free attacks on any further opponent attempting to enter the zone of control.

The Spetum and Warfork no longer have a penalty for attacking targets directly adjacent.

Perk 48   Crossbow Mastery Master crossbows and learn where to aim best. Skills build up 25% less Fatigue.

An additional 20% of damage inflicted with crossbows ignores armor.

Perk 49   Bow Mastery Master the art of archery and pelting your opponents with arrows from afar. Skills build up 25% less Fatigue.

View range and maximum firing range with bows is increased by 1.

Perk 50   Throwing Mastery Master throwing weapons to wound or kill the enemy before they even get close. Skills build up 25% less Fatigue.

Damage is increased by 40% when attacking at 2 tiles of distance.

Damage is increased by 20% when attacking at 3 tiles of distance.

Tier 5Edit

Bb t5
Perk Description
Perk 19   Reach Advantage Learn to use the superior reach of large weapons to keep the enemy from getting close enough to land a good hit.

Each hit with a two-handed melee weapon add as a stack of Reach Advantage that increases your Melee Defence by 5, up to a maximum of 5 stacks, until this character`s next turn. A single attack hitting multiple targets can add several stacks at once.

(Before beasts and exploration was +20% melee defence up to 6 stacks)

If you put away your weapon, you lose all stacks.

Perk 62   Overwhelm Learn to take advantage of your high initiative and prevent the enemy from attacking effectively by overwhelming them with your attacks!

With every attack, hit or miss, against an opponent that acts after you in the current round, inflict the 'Overwhelmed' status effect which lowers both Melee Skill and Ranged Skill by 10% for one turn.

The effect stacks with each attack and can be applied to multiple targets at once with a single attack.

Note: Certain skills can be misleading with the use of the word attack. The three headed flail for example, technically attacks three times with one ability use, but only applies overwhelm once.

Perk 61   Lone Wolf I work best alone. With no ally within 3 tiles of distance, gain a 15% bonus to Melee Skill, Ranged Skill, Melee Defense, Ranged Defense, and Resolve.
Perk 25   Footwork Unlocks the 'Footwork' skill which costs 3 AP and 25 Fatigue to be used and allows you to leave a zone of control without triggering free attacks by using skillful footwork.
Perk 60   Underdog I'm used to it. Any defense malus due to being surrounded by opponents no longer applies to this character. Now counters backstabber perk too.

Tier 6Edit

Bb t6
Perk Description
Perk 35   Berserk RAARGH! Once per turn, upon killing an enemy, 4 Action Points are immediately regained. Characters can not regain more than their maximum Action Points and no more than 4 for a single attack.
Perk 15   Head Hunter Go for the head! Gain +15% chance to hit the head for critical damage each time you hit the body. Bonus is reset upon hitting the head.
Perk 29   Nimble Specialize in light armor! By nimbly dodging or deflecting blows, gain the chance to convert any hits to glancing hits. Hitpoint damage taken is reduced up to 61% (tooltip shows 60%), but lowered exponentially by the total penalty to Maximum fatigue from body and head armor above 15. The lighter your armor and helmet, the more you benefit.

Brawny does not affects this perk.

Does not affect damage from status effect, but can help to avoid receiving them

Perk 03   Battle Forged Specialize in heavy armor! Armor damage taken is reduced by a percentage equal to 5% of the current armor value (total before patch) of both body and head armor. The heavier your armor and helmet, the more you benefit.

Tier 7Edit

Bb t7
Perk Description
Perk 27   Fearsome Make them scatter and flee! Any attack that inflicts at least 1 point of damage to hitpoints triggers a morale check for the opponent, as opposed to only if at or above 15 points of damage.

Note: Unlike overwhelm above, this use of the word attack actually means attack, and will trigger on each hit from the three headed flail.

Perk 41   Duelist Become one with your weapon and go for the weak spots! With the offhand free or carrying a throwable tool (e.g. a throwing net), an additional + 25% of any damage ignores armor. Does not work with two-handed weapons.
Perk 36   Killing Frenzy Go into a killing frenzy! A kill increases all damage by 25% for 2 turns. Does not stack, but another kill will reset the timer.

(The timer starts on the turn it activates, meaning that the buff will expire on the end of the character's next turn)

Perk 30   Indomitable Unlocks the 'Indomitable' skill which costs 3 AP and 25 Fatigue to be used and grants a 50% damage reduction and immunity to being stunned, knocked back or grabbed for one turn.