History ShoutOut / KillingFloor

* The achievement for killing one Clot for every bullet in a full Mark 23 magazine is named "[[Franchise/MetalGear Spec Ops]]".

* The .44 Magnum is the same model as Film/DirtyHarry's WeaponOfChoice. Killing six specimens with one shot each without reloading unlocks the achievement "Feeling Lucky?"

** Taken UpToEleven with the DLC character "Harold Lott", who ''[[{{Expy}} is]]'' that character.

* "Who do you think you are, bleedin' Franchise/ActionMan?"

* The KF_Aperture map is an outright {{Crossover}} with VideoGame/{{Portal}}.
* The trailer for the Summer Sideshow event has a clot saying "[[WesternAnimation/TheSimpsons Knife goes in, guts come out]]."
** There's also references to Literature/{{IT}}. The Circus Husk also has some very [[VideoGame/{{Portal}} GLaDOS]]-esque lines.

--> ''I'm back, and I've got some new tricks!''

* "Who do you think you are, bleedin' WesternAnimation/ActionMan?"

----

-->'''LOADSAMONEY!'''
-->>Money, money, money
-->'''DOSH!'''
** Taken UpToEleven with the DLC character "Harold Lott", who ''is'' that character.
* "Who do you think you are, bleedin' ActionMan?"
* "I know, [[TheItalianJob you're only supposed to blow the bloody doors off!]]"
* "[[Series/RedDwarf Smeg]][[{{Eddsworld}} head]]!"

** There's also references to {{IT}}. The Circus Husk also has some very [[VideoGame/{{Portal}} GLaDOS]]-esque lines.

* [[VideoGame/{{Counter-Strike}} Equipping the knife makes you run faster.]]

* "[[Series/RedDwarf Smeghead]]!"

* "I know, [[Film/TheItalianJob you're only supposed to blow the bloody doors off!]]"

* The trailer for the Summer Sideshow event has a clot saying "[[WesternAnimmation/TheSimpsons Knife goes in, guts come out]]."

* "I know, [[TheItalianJob you're only supposed to blow the bloody doors off!]]"

* The KF_Aperture map is an outright {{Crossover}} with VideoGame/{{Portal}}
* The trailer for the Summer Sideshow event has a clot saying "Knife goes in [[TheSimpsons guts come out]]"
** There's also references to {{IT}}. The Circus Husk also has some very [[VideoGame/{{Portal}} GLaDOS]]-esque lines...

** Taken UpToEleven with the DLC character "Harold Lott", who basically ''is'' that character.

* The new .44 Magnum is the same model as Film/DirtyHarry's WeaponOfChoice. Killing six specimens with one shot each without reloading unlocks the achievement "Feeling Lucky?"

* [[CounterStrike Equipping the knife makes you run faster.]]

* The new .44 Magnum is the same model as DirtyHarry's WeaponOfChoice. Killing six specimens with one shot each without reloading unlocks the achievement "Feeling Lucky?"

* "[[RedDwarf Smeghead]]!"

* The KF_Aperture map is an outright {{Crossover}} with {{Portal}}

** There's also references to {{IT}}. The Circus Husk also has some very [[{{Portal}} GLaDOS]]-esque lines...

----

** There's also references to {{IT}}. The Circus Husk also has some very [[Portal GLaDOS]]-esque lines...

* Some of the Christmas Zed quote ''I Just Want My Hula Hoop'' and ''Grandma Got Run Over By A Reindeer''