Weekly Outbreaks

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Weekly Outbreaks in Killing Floor 2 are the special variations of normal survival mode with the specific mutator-a-like twists that modify certain gameplay elements making game more challenging or forcing players to pickup specific strategies and loadouts in order to survive. There are currently 8 possible Outbreaks, with one available each week. It changes over on tuesday evenings (US time). Completing a Weekly Outbreak will earn player a cosmetic rewards and 500,000 Vosh (cosmetic in-game currency) which is enough to acquire one Vault Crate that contains player accessories and weapon skins to customize your character.

Weekly Outbreaks were added in the game on June 13, 2017, as a part of Summer Sideshow update.

Boom

Killing Floor 2 horzine weekly outbreak
Boom
Zeds under pressure; may explode.
KF2 Event Weekly Boom.png
Maybe it was something they ate? Bad gas? Whatever it was, Zeds explode when killed in this outbreak.
Start Date
End Date
KF2 Event Weekly Boom Thumbnail.jpg Killing Floor 2 Weekly Outbreaks - Boom
Outbreak Completion Reward
KF2 Cosmetic Weekly MindBlown.png Weekly | Mind Blown
Related Achievements

Zeds under pressure; may explode.

Gameplay specifics

  • Explosive ZEDs: ZEDs explode on death.
  • Difficulty - Hard, Waves - 7.
  • Explosion: Damage - 35, Radius - 4.5m, Falloff exponent - 2, Damage type - Explosive.
  • Explosion (Bloat, Scrake, Fleshpound, bosses): Damage - 35, Radius - 5.5m, Falloff exponent - 2, Damage type - Explosive.
  • ZEDs do not take any damage from the explosions.
  • Fleshpounds spawn already enraged.

Cranium Cracker

Killing Floor 2 horzine weekly outbreak
Cranium Cracker
Brain damage is the best damage.
KF2 Event Weekly CraniumCracker.png
In this outbreak, the Zeds have mutated such that they can only be put down for good with damage to the head.
Start Date
End Date
KF2 Event Weekly CraniumCracker Thumbnail.jpg Killing Floor 2 Weekly Outbreaks - The Cranium Cracker
Outbreak Completion Reward
KF2 WeaponSkin Centerfire HeadshotWeekly Mint.png Centerfire | Headshot Weekly | Mint
Related Achievements

Brain damage is the best damage.

Gameplay specifics

  • Headshots only: ZEDs take damage only when being hit in the head.
  • Difficulty - Hard, Waves - 7.
  • Quarter Pound health scale - x0.9.
  • Hans Volter health scale - x0.25, shield scale - x1.
  • Patriarch health scale - x0.25.
  • King Fleshpound health scale - x0.75, shield scale - x0.5.
  • Note that shield HP also depend from the actual health scale.

Tiny Terror

Killing Floor 2 horzine weekly outbreak
Tiny Terror
A small threat is still a threat.
KF2 Event Weekly TinyTerror.png
Shooting Zeds in this outbreak will cause them to shrink, making them harder to hit.
Start Date
End Date
KF2 Event Weekly TinyTerror Thumbnail.jpg Killing Floor 2 Weekly Outbreaks - Tiny Terror
Outbreak Completion Reward
KF2 Cosmetic Weekly TinyTerrorHat Precious.png Weekly | Tiny Terror Hat | Precious
Related Achievements

A small threat is still a threat.

Gameplay specifics

  • Shrinking ZEDs / players: ZEDs and players have their size scaled based on their health percentage.
  • Difficulty - Suicidal, Waves - 7.
  • Size scale at 100% HP - x1, Size scale at 0% HP - x0.5.

Bobble Zed

Killing Floor 2 horzine weekly outbreak
Bobble Zed
...that must hurt their necks.
KF2 Event Weekly BobbleZed.png
Something went horribly wrong with this batch of Zeds and their heads are wwwaaaayyyyyyy larger than normal! Huge even!
Start Date
End Date
KF2 Event Weekly BobbleZed Thumbnail.jpg Killing Floor 2 Weekly Outbreaks - Bobble Zed
Outbreak Completion Reward
KF2 Cosmetic Weekly HorzineHelmet Precious.png Weekly | Horzine Helmet | Precious
Related Achievements

...that must hurt their necks.

Gameplay specifics

  • Enlarged head size: ZEDs and players have bigger heads. ZEDs have more health and only die when their body health is depleted.
  • Difficulty - Suicidal, Waves - 7.
  • ZEDs head size scale - x2.7, Players head size scale - x2.
  • No head dismemberment allowed. ZEDs cannot be killed by taking off their head health.
  • It should be noted that ZEDs still take extra damage to body upon draining head HP (see step 7 of Damage To Take mechanics).
  • ZEDs spawn much faster (x2.5 spawn rate multiplier).
  • Each wave contains only 70% of the base wave AI amount.
  • All ammo has 50% discount.
ZEDs have their health and headhealth adjusted by following multipliers:
ZED: Health scale: Head health scale:
Abomination x1.5 ---
Alpha x3 x4.5
AlphaKing x3 x3
Bloat x1.5 x1.5
Crawler x3 x5
CrawlerKing x3 x5
Cyst x3 x4.5
Fleshpound x2 x1.5
Gorefast x3 x2
Gorefiend x3 x2
Hans x1 ---
Husk x2 x2.5
King FP x2 ---
Patriarch x1 ---
Quarter FP x1.5 x1.1
Scrake x3 x3
Siren x3 x3
Slasher x3 x4.5
Stalker x3 x2.5

Poundemonium

Killing Floor 2 horzine weekly outbreak
Poundemonium
All Fleshpounds, all the time. Almost.
KF2 Event Weekly Poundemonium.png
The Fleshpound Convention is in town!
Start Date
End Date
KF2 Event Weekly Poundemonium Thumbnail.jpg Killing Floor 2 Weekly Outbreaks - Poundemonium
Outbreak Completion Reward
KF2 Cosmetic Weekly KingPoundVisor Precious.png Weekly | King Pound Visor | Precious
Related Achievements

All Fleshpounds, all the time. Almost.

Gameplay specifics

  • Boss replacement: Fight against King Fleshpound. King Fleshpound is capable of performing special "Whirlwind", "Ground Pound Explosion" and "Chest Beam" attacks. When King Fleshpound changes its battle phase it spawns a set on mini Fleshpounds (Quarter Pounds). Quarter Pounds are also have a chance to replace common ZEDs.
  • Difficulty - Suicidal, Waves - 7.
  • Each time King Fleshpound changes its battle phase (including phase 0, when it appear at the map) it spawns a set of Quarter Pounds, which are the smaller versions of the normal Fleshpound. Quarter Pounds have less health and are slightly more vulnerable against various damage types than normal Fleshpounds. Amount of the Quarter Pounds to spawn laying between (1-6) depending on how many players currently on the server.
  • ZED to be replaced by Quarter Pound - Odds: AlphaClot - 5%, Slasher - 10%, GoreFast - 10%, Crawler - 5%, Stalker - 5%, Bloat - 65%.
  • Scrake has 90% chance to be replaced by Fleshpound (normal variant).
  • Each wave contains only 55% of the base wave AI amount.
  • King Fleshpound always spawns enraged.

Up, Up, and Decay

Killing Floor 2 horzine weekly outbreak
Up, Up, and Decay
Try to make ninety-nine Zed balloons.
KF2 Event Weekly UpUpandDecay.png
Shooting Zeds in this outbreak will cause them to inflate like balloons, even to the point of floating away and popping!
Start Date
End Date
KF2 Event Weekly Balloon Thumbnail.jpg Killing Floor 2 Weekly Outbreaks - Up, Up and Decay
Outbreak Completion Reward
KF2 Cosmetic Weekly Hans Plushy Backpack.png Weekly | Hans Plushy Backpack
Related Achievements

Try to make ninety-nine Zed balloons.

Gameplay specifics

  • ZEDs regenerate HP: ZEDs enlarging upon taking damage and at same time constantly regenerate their health / deflate. Killed ZEDs have custom gravity scale and also explode shortly, acting like a balloons.
  • Maximum ZED size scale - x3 (achieved on death), size change interval - x0.1.
  • Custom gravity factor for inflated killed ZEDs = -0.57 (for comparison, the default gravity factor is "1").
  • Explosion is pure visual and does not damage to players.
  • Inflation explosion timer - 1.7 seconds.
  • Each wave contains only 70% of the base wave AI amount.
ZEDs have their health and headhealth adjusted by following multipliers:
ZED: Health scale: Head health scale: Regeneration
Abomination x0.5 --- 1%/s
Alpha x2 x2.5 10%/s
AlphaKing x1 x1.2 10%/s
Bloat x0.4 x1.5 10%/s
Crawler x3 x6 10%/s
CrawlerKing x3 x6 10%/s
Cyst x2 x2.5 10%/s
Fleshpound x0.35 x2 10%/s
Gorefast x1 x3 10%/s
Gorefiend x0.75 x1 10%/s
Hans x1 (shield - x1.25) --- 0.5-1%/s
Husk x1 x1 10%/s
King FP x0.75 --- 1%/s
Patriarch x1.1 --- 1%/s
Quarter FP x0.7 x0.75 10%/s
Scrake x0.5 x1 10%/s
Siren x1 x1 10%/s
Slasher x2 x2.5 10%/s
Stalker x3.5 x5 10%/s
Hans Volter's HP % regeneration rate increases linearly from 0.5% to 1%/s according to the CURRENT PLAYERS / MAX PLAYERS ratio.

Zed Time

Killing Floor 2 horzine weekly outbreak
Zed Time
All the Zed Time in the world.
KF2 Event Weekly ZedTime.png
Ever think that life is passing you by? Not in this outbreak! You'll be in Zed Time any time you're near a Zed.
Start Date
End Date
KF2 Event Weekly ZEDTime Thumbnail.jpg Killing Floor 2 Weekly Outbreak - ZED Time
Outbreak Completion Reward
KF2 Cosmetic Weekly Fleshpound Visor.png Weekly | Fleshpound Visor
Related Achievements

All the Zed Time in the world.

Gameplay specifics

  • Permanent ZED Time: ZED Time is always ON, players may leave ZED Time into the partial ZED Time when being at the certain distance from ZEDs. ZEDs have increased spawn rate. Lvl 25 perks are OFF.
  • ZED Time slomo scale - x0.5.
  • Distance to ZEDs to enter ZED Time - 14.5 meters.
  • Distance to boss to enter ZED Time - 20.48 meters.
  • Height to enter / leave ZED Time, when within ZEDs vicinity - 5.12 meters.
  • ZEDs spawn much faster (x15 spawn rate multiplier). Spawn points have no de-rate time (are always "good" to spawn).
  • Stalker has a 7% chance to be replaced by Scrake. No such replacement allowed during the boss wave.
  • ZED Time goes off when there is only 6 AIs remain during the wave time.
  • Each wave contains only 50% of the base wave AI amount.
  • Level 25 skills are inactive in this mode.
ZEDs have their health and damage adjusted by folling multipliers:
ZED: Health scale: Damage scale:
Abomination x0.8 x0.85
Alpha --- x0.6
AlphaKing --- x0.6
Bloat --- x0.6
Crawler --- x0.6
CrawlerKing --- x0.6
Cyst --- x0.6
FP / QP --- x0.6
Gorefast --- x0.6
Gorefiend --- x0.6
Hans x0.7 x0.7
Husk --- x0.6
King FP x0.8 x0.85
Patriarch x0.8 x0.85
Scrake --- x0.6
Siren --- x0.6
Slasher --- x0.6
Stalker --- x0.6
Stalker has a 7% chance to be replaced by Scrake. No such replacement allowed during the boss wave.
ZED Time goes off when there is only 6 AIs remain during the wave time.
Each wave contains only 50% of the base wave AI amount.
Level 25 skills are inactive in this mode.

Beefcake

Killing Floor 2 horzine weekly outbreak
Beefcake
Bigger they are, harder you fall.
KF2 Event Weekly Beefcake.png
In this outbreak, Zeds increase their health, size, and reach when they hit players or are affected by certain Zed abilities.
Start Date
End Date
KF2 Event Weekly Beefcake Thumbnail.jpg Killing Floor 2 Weekly Outbreak - Beefcake
Outbreak Completion Reward
KF2 Cosmetic Weekly Horzine Armor Precious.png Weekly | Horzine Armor | Precious
Related Achievements

Bigger they are, harder you fall.

Gameplay specifics

  • ZEDs get stronger: Each time ZED scores the damage to player, being rally boosted, is within AOE of Siren's scream attack or takes poison damage leaved by killed Elite Crawler, it's health and size are being increased by the listed value.
  • Difficulty - Suicidal, Waves - 7.
  • Stats increment happens for every ZED individually.
  • Health increment affects both - ZED's max health and ZED's current health. Maximum health increased according to the listed %, if by the moment of health growth ZED will be missing some HP, its current HP value will be increased by (DEFAULT HP x % INCREMENT) amount of the points, but will never be more than its new max health value. In other words ZED will be healed by the given %.
  • Unlike body, ZED's head does not scale up. Its HP and size remain the same.
  • Each wave contains only 75% of the base wave AI amount.
ZED / Action Body size increment, when ZED is under effect of: Max increment
Does damage Rally boosted Siren scream Poison cloud
Abomination 1% 1% 1% 1% x1.25
Alpha 5% 5% 2% 2% x1.5
AlphaKing 5% 5% 2% 2% x1.5
Bloat 5% 10% 2% 2% x1.25
Crawler 10% 5% 2% 2% x1.5
CrawlerKing 1% 5% 2% 2% x1.5
Cyst 5% 5% 2% 2% x1.5
DAR Trapper 5% 10% 2% 2% x1.25
DAR Blaster 5% 10% 2% 2% x1.25
DAR Bomber 5% 10% 2% 2% x1.25
Fleshpound 5% 20% 2% 2% x1.25
Gorefast 5% 5% 2% 2% x1.5
Gorefiend 5% 5% 2% 2% x1.5
Hans 1% 1% 1% 1% x1.25
Husk 5% 10% 2% 2% x1.25
King FP 1% 1% 1% 1% x1.25
Patriarch 1% 1% 1% 1% x1.25
Quarter FP 5% 20% 2% 2% x1.25
Scrake 5% 20% 2% 2% x1.25
Siren 5% 5% 2% 2% x1.5
Slasher 5% 5% 2% 2% x1.5
Stalker 5% 5% 2% 2% x1.5
ZED / Action Health increment, when ZED is under effect of: Max increment
Does damage Rally boosted Siren scream Poison cloud
Alpha 90% 50% 50% 50% x4.5
AlphaKing 90% 50% 50% 50% x4.5
Bloat 20% 20% 20% 20% x3
Crawler 90% 50% 50% 50% x3.5
CrawlerKing 90% 50% 50% 50% x4.5
Cyst 90% 50% 50% 50% x4.5
DAR Trapper 20% 20% 20% 20% x2
DAR Blaster 20% 20% 20% 20% x2
DAR Bomber 20% 20% 20% 20% x2
Fleshpound 0% 0% 0% 0% x1
Gorefast 90% 50% 50% 50% x3
Gorefiend 20% 20% 20% 20% x2
Hans 0% 0% 0% 0% x1
Husk 20% 20% 20% 20% x2.5
King FP 0% 0% 0% 0% x1
Patriarch 0% 0% 0% 0% x1
Quarter FP 0% 0% 0% 0% x1
Scrake 0% 0% 0% 0% x1
Siren 50% 50% 50% 50% x3
Slasher 90% 50% 50% 50% x4.5
Stalker 90% 50% 50% 50% x3