This achievements can be achieved any time in the year.Let Them Burn
Achievement description: Get 1000 points of burn damage with the MAC-10.
Firebug is the only perk which gets burn damage while using MAC-10. To get this achievement, don't kill zombies, just set them to fire, and watch them burn. Achievement should unlock soon (depends on your firebug level, and if you already used MAC-10 before as firebug or not).Getting Chunky
Achievement description: Obliterate 10 Zeds at once with the Pipe Bomb.
Play solo on begineer difficulty. Switch to demoltions and buy pipe bombs, kill everything exept 10 clots. Weld the door, and plant a pipe bomb. After they blow up doors pipe bomb will detonate and you should get the achievement.Random Axe of Kindness
Achievement description: Kill 15 Specimens with a Fire Axe in a Single Wave.
After you finish first wave, switch to berserker, buy axe, and kill 15 zombies with axe in 2nd wave. Careful Spender
Achievement description: Kill 4 Specimens with a Single Shot from a Hunting Shotgun.
Hunting Shotgun is the most powerful shotgun in the game. Switch to support, and buy it. Kill everything exept 4 clots, and group them togheter. When you think they are enough close to each other press left mouse button, and you should have achievement.Master Surgeon
Achievement description: As a Medic, Kill 8 Specimens using a Knife in a Single Wave.
You can do this in first wave. Start as medic and knife 8 clots.Flaming Hell, That was Close
Achievement description: As Firebug, kill the Husk with the Flamethrower before he hurts anyone.
Play online on begineer, and as soon as you see Husk burn him with flamethrower before he has chance to shoot anybody.Bitter Irony
Achievement description: Kill 2 scrakes with a Chainsaw in a Single Wave.
The easiest way is to start a solo beginner difficulty game. Pick berserker perk and when 2 Scrakes spawn (usually wave 7+) kill them with a chainsaw.The L.A.W. That Broke The Camel's Back
Achievement description: Deliver the Killing Blow to the Patriarch with a L.A.W. Rocket.
Play on begineer alone. For patriarch switch to demoltions and buy L.A.W. When you shoot patriarch with L.A.W, he will runaway and try to heal himself. Shoot him again before he escapes, and he should die. Achievement will unlock.Healing Touch
Achievement description: Heal 200 teammates with the MP7's medication dart.
Play on normal or higher difficulty as medic. Buy MP7, and use alt-fire (default button is middle mouse) to heal injured teammates. Achievement will unlock once you will heal 200th teammate.Nail'd!
Achievement description: Kill 4 stalkers in a game with the Nailgun.
Collect 4 stalkers and shoot them with the Vlad. After you kill them, the achievement will be unlocked.Explosion of Love
Achievement description: Heal yourself plus 5 other players with one grenade
You will need 5 friends for this one. Play on begineer as medic. Kill all zombies. But before you kill last one, make sure everybody has 99% or less health (including you). In trader wave, go in trader with friends and group togheter. Throw 1 medic nade, and you should have achievement.Single-shot Equalizer
Achievement description: Kill 4 different types of zeds with headshots with 4 shots from the Long Musket or the M14 without reloading.
Play on begineer difficulty. Once you collect enough money for M14, switch to sharpshooter, and buy it. Kill everything except clot, gorefast, stalker, and crawler. Make sure your M14 is reloaded, then headshot each of them to get achievement.
TODO: Add video.Assault Flayer Ordinance
Achievement description: Push a scrake back with the direct fire from a Hunting Shotgun or alt fire from the Multi-Chamber ZED Thrower.
I've heard this achievement is buggy. All you have to do is to buy Hunting Shotgun, and use direct fire (not altfire) on scrake to get it.Killer Junior
Achievement description: Kill 20 crawlers in mid-air with the M79 (explosive kill).
As Demolitions use the M79 to kill zeds. As you play, the achievement will eventually unlock. SCAR'd
Achievement description: Kill 1000 Specimens with the SCAR.
You do not need to get 1000 kills in one round, but in total. When you play commando, use SCAR and achievement will unlock one day (depends on how much you play KF, and how much you play with SCAR of course).Hot Cross Fun
Achievement description: Kill 25 Burning Specimens with a Crossbow.
Play as firebug, and buy crossbow and MAC-10. Press al-fire key (default middle mouse) to switch to semi-automatic mode. Shoot any small zed in leg with MAC-10, then finish him off with crossbow. After you do this 25 times, achievement will unlock. This does not need to be done in a single round, but in total.Blooper Reel
Achievement description: Turn 500 zeds into Giblets using the M79.
You need to play SOLO for this one. Play as demolitions and shoot large group of zombies with M79. Once you will turn 500 zeds into giblets with it, achievment will unlock.Merry Men
Achievement description: Kill the Patriarch when everyone is ONLY using Crossbows.
Play alone. For patriarch wave, switch to sharpshooter and sell EVERYTHING, and buy crossbow (or keep it if you have it already). Use ONLY crossbow hole wave. Even for killing clots and stuff. After killing patriarch with crossbow achievement will unlock.Explosive Personality
Achievement description: As Demolitions, kill 1000 Specimens with the Pipebomb.Pound This
Achievement description: Kill 100 Fleshpounds with the AA12.
To kill 100 fleshpounds, you will need some time. Just play support often, and always use AA12 for fleshpounds, and achievement will unlock once you get 100 fleshpound kills.Dot of Doom
Achievement description: Get 25 headshots in a row with the EBR while using the Laser Sight.
Very tricky achievement. Some people say it is the hardest achievement in the game. To get it, play on begineer as sharpshooter. Buy M14 EBR, and turn on laser with alt-fire key (default is middle mouse). Kill everything except 25 clots. Then you have to aim very carefuly and headshot all of them. You MUST NOT aim while shooting. With a bit of luck you will get achievement.Social Outburst
Achievement description: Kill 8 specimens with one grenade.
Works the best on begineer difficulty. Select demoltions perk, and kill everything exept 8 clots. If clots are not very close to each other, weld door so they group togheter. When they destroy door throw a grenade and you should get achievement.Trench Warfare
Achievement description: Set a total of 200 Zeds on fire in Hillbilly Horror (trench-gun).
Play hillbilly horror (map) as firebug. Set 200 zeds on fire and achevement will unlock. Does NOT need to be done in single game, but in total.Historical Remnants
Achievement description: Kill 6 Zeds with one magazine on an MKb42, without reloading.
Switch to commando and buy MKb42. Collect some stalkers, clots, crawlers and empty a clip into their ugly faces.Single-Load Doom Bombardier
Achievement description: Kill a ZED with a direct (unexploded) shot from the Orca Bomb Propeller or the M-79/M32.
Very simple achievement. Buy M79, M32 or Orca and get close to clot. Press left mouse button and achievement will unlock.Turbo Executioner
Achievement description: Kill 5 zeds in ZED time without reloading with Dr. T's LDS or Bullpup.
Play as commando, and buy bullpup. Kill any 5 zeds without reloading to get achievement.