KF2 Perk Skills Explained: Thai Guide to All Perks (2024)
A Thai-language Steam guide (updated for game version 1149, 2024, billed as "the last guide" since Tripwire moved on to Killing Floor 3) that translates and explains every perk skill in Killing Floor 2 and offers build ideas. The author built it from 15 years of play and from Thai video translations by the community channel PoliceDom, and refreshed an older Thai translation that had not been updated for three years. This page condenses the perk bonuses and skill choices; build suggestions are the author's personal opinions. "Perk weapon" in skill texts means the weapons of that perk (for example Commando weapon). See also the perks and skills overview and the 2024 HoE skills guide.
Berserker
Perk bonuses. Weapon damage +1 percent per level (25 at level 25); damage resistance +2 percent per 5 levels (10); night vision (hold F); Clots cannot grab you. XP: damage with Berserker weapons and kills near teammates with them.
Berserker: level 5 skill panel.
| Level | Skills |
|---|---|
| 5 | Dreadnaught: health 100 to 200. Skirmisher: move 20% faster, sprint 25% faster with Berserker weapons and regenerate 1 HP per second. |
| 10 | Vampire: heal 3 HP per kill and attack 20% faster with Berserker weapons. Butcher: attack 20% faster and weapon damage +20%. |
| 15 | Resistance: damage resistance +15% and +15% to poison and Siren scream. Parry: a parry or timed block reduces damage by 30%, attack speed +5% and damage +35% for 8 seconds. |
| 20 | Smash: heavy attacks do up to 50% more damage, +25% on head hits and extra stumble. Massacre: light attacks do up to 30% more damage and attack 5% faster. |
| 25 | Berserk Rage: in Zed Time nearby ZEDs freeze and you heal 50% per Zed Time. Spartan: in Zed Time you move and attack in real time. |
Berserker: level 25 skill panel.
Weapons. Weapons the author recommends: Bone Crusher (needs animation cancelling), Hemoclobber (+1 or higher), Eviscerator (for beginners), HRG Tesla Launcher (shoot first, slash later), Katana (early game, up to wave 5); DLC: Frost Fang, Ion Thruster, a single Piranha Pistol (good at breaking the Matriarch's armor), Blood Sickle.
Commando
Perk bonuses. Weapon damage +1% per level (25); sees cloaked ZEDs and health bars from 10 m, +2 m per level (60 m); Zed Time extensions start at 1, +1 per 5 levels (6); reload +2% per 5 levels (10); recoil -2% per level (50); nearby teammates see cloaked ZEDs; night vision. XP: damage with Commando weapons, kills of Stalkers.
Commando: level 5 skill panel.
| Level | Skills |
|---|---|
| 5 | Tactical Reload: faster reloads. High Capacity Mags: magazine +50%. |
| 10 | Fallback: 9mm, HGR 93R and knife damage +85% and 50% faster weapon switching. Impact Rounds: stumble +150%. |
| 15 | Tenacious: health and armor +25% (to 125 each). Prepared: reserve ammo +20%. |
| 20 | Hollow Point Rounds: damage +30%. Eat Lead: magazine +100% (stacks with High Capacity Mags). |
| 25 | Tactician: in Zed Time reload and switch at twice real time (but guns fire slowly). Machine Gunner: +3% damage and triple fire rate (but reloads slowly). |
Commando: level 25 skill panel.
Weapons. Recommended weapons: SA80 L85A2 Bullpup, SCAR-H, Kalashnikov AK-12, HMTech-401, HMTech-501 Grenade Rifle, M16 M203; DLC: MG3 Shredder, Sentinel.
Support
Perk bonuses. Welding speed +3% per level (75); weapon damage +1% (25); penetration +20% (500); ammo +1% (25); carry weight +1 slot per 5 levels (20 at level 25); gives ammo to teammates and repairs broken doors (Ammo Backpack gives a normal ammo box worth, without explosion). XP: damage with Support weapons and welding doors.
Support: level 5 skill panel.
| Level | Skills |
|---|---|
| 5 | High Capacity Magazines: magazine +75%. Tactical Reload: faster reload. |
| 10 | Fortitude: health +50% (150) and 10% resistance. Salvo: damage +30%. |
| 15 | Armor Piercing Shot: better penetration and +10% damage. Tight Choke: pellet spread -50%. |
| 20 | Resupply Pack: teammates restore 30% ammo and 20% armor once per wave when interacting with you; you carry 20% more ammo. Concussion Rounds: stumble +150%. |
| 25 | Penetrator: in Zed Time shots pierce without damage loss and you reload in real time (but the camera turns slowly). Barrage: in Zed Time weapons fire at real time speed (shotguns reload very slowly). |
Support: level 25 skill panel.
Field Medic
Perk bonuses. Syringe recharge +8% per level (200); healing +2% (50); Bloat bile resistance +2% (50); speed +0.2% (5); armor bonus +2% (50). XP: damage with Medic weapons and healing teammates.
Field Medic: level 5 skill panel.
| Level | Skills |
|---|---|
| 5 | Symbiotic Health: health +25% and heal yourself 6% per dart per teammate. Resilience: +1% resistance per lost HP, up to 30%. |
| 10 | Adrenaline Shot: healing gives +10% speed for 5 s, stacking to 30%. Combatant Doctor: magazine +50% and +10% speed. |
| 15 | Focus Injection: healing gives +5% damage for 5 s, stacking to 20%. Acidic Rounds: healing darts poison ZEDs. |
| 20 | Coagulant Booster: healing gives +10% resistance for 5 s, stacking to 30%. Battle Surgeon: Medic weapon damage +20%. |
| 25 | Airborne Agent: in Zed Time you release healing gas that hurts ZEDs and heals allies. Zedative: in Zed Time Medic weapons are stronger. |
Field Medic: level 25 skill panel.
Demolitionist
Perk bonuses. Weapon damage +1% per level (25); explosion resistance 10% +2% per level (60); explosive ammo 1, +1 per 5 levels (5 more); can give one grenade per teammate per wave; welded doors become explosive doors; at 5 HP you explode and damage nearby ZEDs. XP: damage with Demolitionist weapons and killing Fleshpounds.
Demolitionist: level 5 skill panel.
| Level | Skills |
|---|---|
| 5 | Bombardier: explosive damage +25%. Shock Trooper: faster reload and +10% knockdown. |
| 10 | High Impact Rounds: direct hits +25%. Extra Rounds: +10 explosive ammo (not C4). |
| 15 | Sonic Resistant Rounds: Siren screams do not affect your explosives. Fragmentation Rounds: blast radius +50%. |
| 20 | Armor Piercing Rounds: direct hits on critical areas +50% (heads, EDAR chests). Concussive Rounds: reaction, stun, stumble and knockdown +50%. |
| 25 | Destroyer of Worlds: in Zed Time explosions create high-power radiation waves that poison ZEDs, and you can fire at any range. Mad Bomber: in Zed Time faster fire and reload, blast radius +25%, explode at any range. |
Demolitionist: level 25 skill panel.
Firebug
Perk bonuses. Weapon damage +0.8% per level (20); reload +0.8% (20); enemy fire resistance 30% +2% per level (80); own fire resistance 25% +3% per level (100); starting ammo +10% per 5 levels (50). XP: damage with Firebug weapons and killing Bloats and Crawlers.
Firebug: level 5 skill panel.
| Level | Skills |
|---|---|
| 5 | Bring the Heat: fire weapon damage +35%. High Capacity Fuel Tank: magazine capacity +100%. |
| 10 | Barbecue: burning lasts 150% longer. Ground Fire: ground fire damage x3 and slows ZEDs 30%. |
| 15 | Napalm: burning ZEDs ignite others on contact and burn 150% longer. Zed Shrapnel: 30% chance a ZED killed by Firebug weapons explodes, damaging and stunning those around. |
| 20 | Heat Wave: ZEDs burned at close range stagger back. Firestorm: range of the Caulk n' Burn flamethrower and Microwave Gun +, ground fire lasts 20% longer. |
| 25 | Pyromaniac: in Zed Time Firebug weapons fire in real time with unlimited ammo. Inferno: in Zed Time fire damage continues and spreads to all nearby ZEDs. |
Firebug: level 25 skill panel.
Gunslinger
Perk bonuses. Weapon damage +1% per level (25); bullet damage reduction 5% +1% per level (30); speed +0.8% (20); recoil -1% (25); reload in Zed Time +3% (75). XP: damage with Gunslinger weapons and headshots.
Gunslinger: level 5 skill panel.
| Level | Skills |
|---|---|
| 5 | Steady: ignore movement speed loss and +7.5% damage with iron sights, with much less recoil. Quick Draw: less recoil on hip fire, +5% speed and 50% faster weapon switching. |
| 10 | Rack 'em Up: head hits add +10% damage, stacking to 50%. Bone Breaker: damage +20% and +30% on arm and leg hits. |
| 15 | Line 'em Up: bullets keep damage when piercing and penetrate better. Speedloader: faster reload. |
| 20 | Skullcracker: head hits slow ZEDs 30%. Knock 'em Down: shots at running ZEDs' legs add strong knockdown and chest hits add strong stumble. |
| 25 | Whirlwind of Lead: in Zed Time ammo is unlimited. Fan Fire: in Zed Time fire rate x3 and reload at real time. |
Gunslinger: level 25 skill panel.
Sharpshooter
Perk bonuses. Headshot damage +1% per level (25); recoil -1% (25); weapon switch +2% (50). XP: damage with Sharpshooter weapons and headshots.
Sharpshooter: level 5 skill panel.
| Level | Skills |
|---|---|
| 5 | Sniper: +25% damage when stationary. Marksman: +25% fire rate and +10% speed. |
| 10 | Stability: when crouching +30% damage, +50% movement speed and +20% reload. Ballistic Shock: stun +100%. |
| 15 | Rack 'em Up: head hits add +10% damage, stacking to 50%. Tactical Reload: faster reload. |
| 20 | Dead Eye: with iron sights recoil -10% and headshot damage +10%. Always Prepared: +1 grenade (5 to 6) and magazine +25%. |
| 25 | Assassin: headshots have a 5% chance to trigger another Zed Time, and in Zed Time headshot damage +35%. Ranger: same chance, and in Zed Time every headshot stuns the ZED immediately. |
Sharpshooter: level 25 skill panel.
SWAT
Perk bonuses. Weapon damage +1% per level (25); bullet damage reduction 5% +1% (30); magazine +4% per level (100); weapon switch +1% (25). XP: damage with SWAT weapons and killing Clots.
SWAT: level 5 skill panel.
| Level | Skills |
|---|---|
| 5 | Heavy Armor Training: while armored you only lose health to sonic attacks, Clots cannot grab you, and you start with 50% armor. Tactical Movement: faster move and no speed loss when aiming or crouching. |
| 10 | Close Combat Training: 9mm, HGR 93R, knife and bash damage +100% and you start with dual pistols. Tactical Reload: faster reload. |
| 15 | Suppression Rounds: stumble +100%. Ammo Vest: reserve ammo +30%. |
| 20 | Assault Armor: max armor +50% and armor regenerates 50% per wave (stacks with Heavy Armor Training). Cripple: repeated hits slow ZEDs 30%, double on head or weak points. |
| 25 | Battering Ram: in Zed Time you move at real time and ram ZEDs, dealing heavy damage and knocking them down. Rapid Assault: in Zed Time unlimited ammo, real-time fire rate and stumble +100%. |
SWAT: level 25 skill panel.
Survivalist
Perk bonuses. All weapon damage +0.6% per level (15); damage resistance 1% per level (25); armor +1% (25); reload in Zed Time +3% (75); weapon switch +2% (50, same as Sharpshooter). XP: damage with any weapon and killing Clots with any weapon.
Survivalist: level 5 skill panel.
| Level | Skills |
|---|---|
| 5 | Tactical Reload: faster reload for Commando, Gunslinger and SWAT weapons. Heavy Weapon Training: faster reload for Demolitionist, Sharpshooter and Support weapons. |
| 10 | Medic Training: syringe 30% stronger and 50% faster recharge. Melee Expert: melee attack speed +20%, damage +75%, speed +25% with any melee weapon. |
| 15 | Ammo Vest: reserve ammo +15% for every weapon and a healing grenade option. Weapon Harness: +5 carry slots and a fire grenade option. |
| 20 | Spontaneous Zed-plosion: 30% chance a killed ZED explodes, damaging and stunning those around. Make Things Go Boom: explosion resistance +50% and blast radius +50%. |
| 25 | Madman: in Zed Time every weapon fires three times faster. Lockdown: a Zed Time freeze effect. |
Survivalist: level 25 skill panel.
Notes from the author
The guide does not cover stun, stumble, knockdown or parry values or play tricks; the author points to YouTube channels PoliceDom (Thai perk translations, season events and ZED-killing tips including animation cancelling), Fitzroy (a complete beginner series, three years old at the time) and Pathfinder (English patch and DLC weapon reviews). The perk builds are personal and not required.
