History ShoutOut / Ultrakill

* 7-S is named "Hell Bath No Fury", a play on the phrase "Hell hath no fury like a woman scorned.", a misquoted passage from ''Theatre/TheMourningBride''. Meanwhile, the level itself is a WholePlotReference to ''VideoGame/PowerWashSimulator'' in terms of directly lifting its mechanics, but the concept of [[spoiler:cleaning up after the mess of a FirstPersonShooter hero]] also makes it an allusion to ''VideoGame/VisceraCleanupDetail''. [[spoiler:However, activating a secret within the level turns off the lights and summons ghostly Drones which can be only be defeated by being sucked into a vacuum, turning it from Power Wash Simulator to VideoGame/LuigisMansion.]]

* The secret at the end of the Agnes Gorge Trail in 7-S is [[spoiler:Hakita relaxing on the beach from ''VideoGame/MyHouse'']].

* 7-S is named "Hell Bath No Fury", a play on the phrase "Hell hath no fury like a woman scorned.", a misquoted passage from ''Theatre/TheMourningBride''. Meanwhile, the level itself is a WholePlotReference to ''VideoGame/PowerWashSimulator'' in terms of directly lifting its mechanics, but the concept of [[spoiler:cleaning up after the mess of a FirstPersonShooter hero]] also makes it an allusion to ''VideoGame/VisceraCleanupDetail''.

* 7-S is named "Hell Bath No Fury", a play on the phrase "Hell hath no fury like a woman scorned." from ''Theatre/TheMourningBride''. Meanwhile, the level itself is a WholePlotReference to ''VideoGame/PowerWashSimulator'' in terms of directly lifting its mechanics, but the concept of [[spoiler:cleaning up after the mess of a FirstPersonShooter hero]] also makes it an allusion to ''VideoGame/VisceraCleanupDetail''.

* Stage 7-3 is named "No Sound, no Memory", after the Music/{{Merzbow}} song "I'm Coming to the Garden... No Sound, No Memory". Its second background music is titled "Danse Macabre", after the art genre of the same name.

* 7-S is a WholePlotReference to ''VideoGame/PowerWashSimulator'' in terms of directly lifting its mechanics, but the concept of [[spoiler:cleaning up after the mess of a FirstPersonShooter hero]] also makes it an allusion to ''VideoGame/VisceraCleanupDetail''.

* The Jackhammer/Alternate Shotgun you can find in 7-2 is essentially the Impact Hammer from ''Videogame/UnrealTournament'' given the ULTRAKILL treatment: A [[PileBunker melee, pneumatic jackhammer-like weapon]] that can be charged up for a powerful blow and can also be used for push-jumping off terrain and even deflecting rockets if you have good timing.

** Likewise, the Alternate Shotgun is a single target melee range jackhammer weapon just like the [[VideoGame/UnrealTournament Impact Hammer.]]

* The Jackhammer/Alternate Shotgun you can find in 7-2 is essentially the Impact Hammer from ''Videogame/UnrealTournament'' given the ULTRAKILL treatment: A melee, pneumatic jackhammer-like weapon that can be charged up for a powerful blow and can also be used for push-jumping off terrain and even deflecting rockets if you have good timing.

* Since it fires a drill spear, the Screwdriver Railcannon is a reference to ''Anime/TengenToppaGurrenLagann''. To cement the reference, the HUD icon features a core drill.

* The (still unreleased) [[https://www.youtube.com/watch?v=xmU9EK8_Q8k red Rocket Launcher variation]] is called [[Music/TheProdigy Firestarter]].

* The (still unreleased) [[https://www.youtube.com/watch?v=xmU9EK8_Q8k red Rocket Launcher variation]] is called [[Music/TheProdigy Firestarter]]

* The (still unreleased) [[https://www.youtube.com/watch?v=xmU9EK8_Q8k red Rocket Launcher variation]] is called ''[[Music/TheProdigy Firestarter]]''

** The player can fight a Mysterious Druid Knight and Owl; the Druid Knight wears a knight's helmet with a yellow plume like {{WebVideo/Mandalore Gaming}}'s avatar, and the owl references [[Podcast/PleaseStopTalking Shammy's]] owl fursona, and they're both voiced by their respective references. MDK attacks in [[VideoGame/EYEDivineCybermancy "Full auto" and "Fuller auto"]], and as the fight progresses, he uses [[VideoGame/TheMysteryOfTheDruids the power of the druids to increase his speed and is told by the Owl to use salt]].