HIFU-Inferno icon


A hard unique difficulty that changes enemy skills, AI, scaling and more! Now with 6 Mastery Skins!

Last updated 3 months ago
Total downloads 184576
Total rating 19 
Categories Mods Skins Gamemodes
Dependency string HIFU-Inferno-1.6.1
Dependants 88 other mods depend on this mod

This mod requires the following mods to function

bbepis-BepInExPack-5.4.2102 icon

Unified BepInEx all-in-one modding pack - plugin framework, detour library

Preferred version: 5.4.2102
RiskofThunder-R2API_Difficulty-1.0.2 icon

API for adding custom in-game difficulties

Preferred version: 1.0.2
RiskofThunder-R2API_ContentManagement-1.0.1 icon

API for adding content to the game

Preferred version: 1.0.1
RiskofThunder-R2API_Language-1.0.0 icon

API for modifying the language localisation of the game

Preferred version: 1.0.0
RiskofThunder-R2API_RecalculateStats-1.0.0 icon

API for manipulating Character Stats

Preferred version: 1.0.0
RiskofThunder-R2API_Items-1.0.1 icon

API for adding custom items

Preferred version: 1.0.1
Moffein-AI_Blacklist-1.5.1 icon

Lets you blacklist items from Monsters, Vengeance Doppelgangers, Scavengers, and Mithrix. Server-Side and Vanilla-Compatible.

Preferred version: 1.5.1
Rune580-Risk_Of_Options-2.5.3 icon

A convenient API for adding BepInEx ConfigEntry's to a option menu

Preferred version: 2.5.3
KingEnderBrine-LobbySkinsFix-1.2.0 icon

Fixes issues with switching to modded skin and back to vanilla in lobby

Preferred version: 1.2.0



Modding Server:

discord server click me


In-Game Difficulty

This difficulty aims to make the game tougher in a fair and learnable way. It requires lots of awareness and skill.

For comparison's sake, I believe this is the hardest, below that of Armageddon, however you can configure it to be much more difficult, pretty much impossible.

It should feel a lot more like the planet doesn't want you here, and is there to obliterate you. You are likely gonna get swarmed.

Note: Other mods that change enemies/directors might not be compatible with this difficulty. Mastery skin screenshots at the bottom.

Skin Credits

  • Thanks to dotflare for doing 98% of the work
Click me for skin screenshots

Commando Mastery Bandit Mastery Captain Mastery Artificer Mastery Mercenary Mastery Railgunner Mastery

More skins are going to be added whenever dotflare feels like working on them, I'm not rushing him.


1.6.1 Patch Notes

  • Nerfed Beetle damage quite a bit

1.6.0 Patch Notes

  • Added 3 new mastery skins (Artificer, Mercenary, Railgunner)
  • Added config options for
    • Mithrix Changes (not perfect sadly)
    • Pillar Speed
  • Buffed Clay Templar Damage slightly
  • Bugfixes

1.5.1 Patch Notes

  • Made all champions teleport when out of bounds
  • Made Mithrix cleanse debuffs during the leap
  • Bugfixes

1.5.0 Patch Notes

  • Made the readme a lil' slicker
  • Added Config options for
    • Enemy % Cooldown Reduction Scaling
    • Ally Permanent Damage % (0 by default kirn lmao)
  • Moved some configs around
  • Added AI Scaling for Mini Mushrum and Beetle
  • Added Anti-cheese for all Mithrix Phases
  • Made all monster projectiles last at least 4 seconds
  • Made monsters not spawn during Mithrix Phase 3
  • Buffed Enemy Regen Scaling
  • Buffed Alloy Worship Unit Fire And Stop Movement Type
  • Buffed Clay Apothecary Face Slam Blast Radius and Cooldowns
  • Buffed Grovetender Damage
  • Buffed Imp Health and Double Slash Damage
  • Buffed Larva Health
  • Buffed Lesser Wisp Damage
  • Buffed Mithrix in so many ways 3kliksphilip could make a 20 minute long video
  • Buffed Parent Teleport Distance, HP Threshold and Cooldowns
  • Buffed Scavenger Sit HP Threshold and Range
  • Buffed Solus Control Unit Special HP Threshold and Primary Stock Count
  • Buffed Void Barnacle Range
  • Buffed Void Devastator Cooldowns
  • Buffed Void Reaver Fire Portal Bomb Damage and Count
  • Buffed Wandering Vagrant Spawn Animation Duration
  • Buffed Xi Construct Range and Laser Aim Speed
  • Berfed Imp Overlord Ground Pound Distance
  • Nerfed Bighorn Bison Cooldowns
  • Nerfed Clay Dunestrider Prep TarBall Animation Speed
  • Nerfed Clay Templar Damage
  • Nerfed Grovetender Animation Speeds
  • Nerfed Lunar Exploder Cooldowns
  • Nerfed Lunar Golem Cooldowns
  • Bugfixes (this impacts the difficulty quite a bit)
  • Beetles hitting twice still isn't fixed (I have no idea how to

1.4.1 Patch Notes

  • Bugfixes

1.4.0 Patch Notes

  • Added a bunch of stuff to make it harder and more fun, written below
  • Added Config options for
    • Enemy Armor Scaling
    • Enemy Health Scaling
    • Boss Health scaling
    • AI Scaling
    • Combat Director Credit Multiplier
    • Holdout Zone Speed
    • Holdout Zone Radius
  • Buffed Beetle Queen Cooldowns
  • Buffed Clay Apothecary Cooldowns
  • Buffed Hermit Crab Cooldowns
  • Buffed Lunar Golem Cooldowns
  • Nerfed Lunar Exploder Cooldowns
  • Nerfed Clay Templar Speed
  • Nerfed Mithrix Phase 4 health a lot
  • Split Config
  • Simplified Config descriptions

1.3.2 Patch Notes

  • Bugfixes

1.3.1 Patch Notes

  • Bugfixes

1.3.0 Patch Notes

  • Added 3 Mastery Skins (Commando, Bandit, Captain)
  • Adjusted Stone Golems, much worse aim, much faster laser charging
  • Adjusted boss health
  • Miscellaneous buffs
  • Added Config options for
    • Level and Difficulty Boost
    • Scale Level and Difficulty Boost with player count
    • Monster Limit
    • Enable AI Changes
    • Enable Skill Changes
    • Enable Stat Changes
    • Enable Combat Director Changes
    • Make Mithrix scale with Attack Speed
    • Randomization
  • All Config options now update in realtime, as well as the description
  • Updated description
  • Bugfixes

1.1.7 Patch Notes

  • Added slight vignette and red color grading
  • Buffed HIFU's modding skills

1.1.6 Patch Notes

  • Updated Risk of Options icon
  • Yeah that's it (it was bugging me fr)

1.1.5 Patch Notes

  • Added Risk of Options support
  • Nerfed Phase 4 Mithrix

1.1.4 Patch Notes

  • Buffed Magma Worm and Overloading Worm speed
  • Nerfed Xi Construct range further
  • Nerfed Stone golem aim further
  • Nerfed HIFU's sanity
  • Tried to add my own AI and failed for the 20th time (im going insane)
  • General optimization

1.1.3 Patch Notes

  • Bugfixes

1.1.2 Patch Notes

  • Added config options for
    • Difficulty Scaling
    • Level move speed
    • Level regen
    • Level attack speed
  • I forgor
  • Added list of changes doc

1.1.1 Patch Notes

  • Updated the localization files

1.1.0 Patch Notes

  • New Icon
  • Mastery Skins coming soon ! ! (Thanks dotflare)
  • Buffed Monster level regen, level attack speed and level move speed
  • Changed how the above works - worldspawn enemies are now affected
  • Buffed all spawn animation times to 2.5s
  • Buffed projectile speed a bit - they are now 25% faster instead of 20%
  • Buffed Mithrix attacks for all phases
  • Buffed Elder Lemurian flamebreath
  • Buffed Aurelionite gold fist
  • Buffed Beetle Guard sunder animation times and count

1.0.5 Patch Notes

  • Buffed Imp Overlord void spikes, move speed, tweaked AI
  • Buffed Geep and Gip damage and move speed
  • Buffed Aurelionite health, move speed, tweaked AI to match stone titan
  • Buffed Beetle Queen - tweaked AI
  • Buffed Imp - tweaked AI
  • Buffed Mini Mushrum cooldowns
  • Buffed Beetle Guard animation times
  • Buffed Mithrix Phase 1 and 3 aggression, wave damage, wave count, tweaked AI
  • Buffed Phase 4 Mithrix - unable to be frozen
  • Buffed Elder Lemurian firebreath radius and spread
  • Nerfed Imp Overlord void spikes damage
  • Nerfed Phase 4 Mithrix orb slam animation time
  • Nerfed Stone Golem aim very slightly
  • Nerfed Xi Construct aim a looot
  • Nerfed Elder Lemurian firebreath animation times
  • Nerfed Clay Templar damage

1.0.4 Patch Notes

  • Nerfed Minor Construct fire rate quite a bit
  • Nerfed Blind Pest damage quite a bit
  • Nerfed Monster aim very slightly

1.0.3 Patch Notes

  • Buffed Monster projectile speed by 20%
  • A couple bugfixes, one of which will make the game harder

1.0.2 Patch Notes

  • Changed Imp AI a little bit
  • Changed Mini Mushrum AI
  • Changed Wandering Vagrant AI - shouldn't be as close now
  • Buffed Beetles, Lesser Wisps and Void Reavers - they are now resistant to stuns
  • Buffed Solus Control Unit health and speed
  • Buffed Scavenger speed
  • Buffed Larva health
  • Buffed Imp dash distance
  • Buffed Imp slash boost
  • Buffed Alloy Vulture cooldowns
  • Buffed Clay Dunestrider animation times, tarball count and barrage ball count
  • Buffed Alpha Construct animation times
  • Buffed Wandering Vagrant animation times
  • Buffed Xi Construct aim
  • Buffed Hermit Crab mortar count, damage overall and animation times
  • Buffed Grandparent rock throw animation times and speed
  • Buffed Brass Contraption animation times
  • Buffed Imp Overlord void spikes damage slightly
  • Buffed Imp Overlord ground pound radius slightly
  • Nerfed Larva speed massively
  • Nerfed Beetle dash animation speed yet again (literally went from 1.5s => 1.62s => 2.7s in three versions lol)
  • Nerfed Xi Construct range
  • Nerfed Clay Dunestrider barrage ball damage

1.0.1 Patch Notes

  • Added Based mod dependency
  • Changed Monsters to no longer start with Titanic Knurl
  • Changed Mithrix - lower health across the board, higher base damage for Phase 4, Phase 4 item steal should be more similar to vanilla now
  • Buffed Monster level regen slightly, with the loss of Titanic Knurl
  • Buffed Parent move speed and cooldowns
  • Buffed Bighorn Bison move speed, cooldowns and tweaked AI
  • Buffed Lunar Exploder cooldowns
  • Buffed Lemurian fireball damage slightly
  • Buffed Lesser Wisp spawn animation time
  • Buffed Mini Mushrum animation times and damage quite a bit
  • Buffed Void Barnacles animation time and projectile count
  • Buffed Clay Dunestrider balls animation time and projectile count
  • Buffed Gup damage and move speed, tweaked AI, each split gains more move speed
  • Buffed Void Reaver balls animation time and projectile count
  • Buffed Clay Apothecary range and move speed
  • Buffed Escape Sequence Lines damage (mfw Mithrix Phase 4 breaks opal and this change rarely comes into play)
  • Nerfed Lunar Exploder move speed
  • Nerfed Lunar Wisp damage, changed their AI to be more close range
  • Nerfed Beetle dash animation time slightly
  • Nerfed Stone Golem aim slightly

Available versions

Please note that the install buttons only work if you have compatible client software installed, such as the Thunderstore Mod Manager. Otherwise use the zip download links instead.

Upload date Version number Downloads Download link  
2023-2-11 1.6.1 59206 Version 1.6.1 Install
2022-12-29 1.6.0 26233 Version 1.6.0 Install
2022-10-1 1.5.1 29377 Version 1.5.1 Install
2022-9-23 1.5.0 3491 Version 1.5.0 Install
2022-7-12 1.4.1 27871 Version 1.4.1 Install
2022-7-10 1.4.0 1311 Version 1.4.0 Install
2022-6-25 1.3.2 4465 Version 1.3.2 Install
2022-6-24 1.3.1 401 Version 1.3.1 Install
2022-6-24 1.3.0 73 Version 1.3.0 Install
2022-5-12 1.1.7 9319 Version 1.1.7 Install
2022-5-9 1.1.6 6983 Version 1.1.6 Install
2022-5-8 1.1.5 817 Version 1.1.5 Install
2022-5-3 1.1.4 2931 Version 1.1.4 Install
2022-4-29 1.1.3 1907 Version 1.1.3 Install
2022-4-28 1.1.2 750 Version 1.1.2 Install
2022-4-24 1.1.1 4075 Version 1.1.1 Install
2022-4-24 1.1.0 76 Version 1.1.0 Install
2022-4-18 1.0.5 3096 Version 1.0.5 Install
2022-4-17 1.0.4 597 Version 1.0.4 Install
2022-4-17 1.0.3 99 Version 1.0.3 Install
2022-4-16 1.0.2 498 Version 1.0.2 Install
2022-4-15 1.0.1 546 Version 1.0.1 Install
2022-4-14 1.0.0 454 Version 1.0.0 Install