# Gub's Recoilless Rifle Fatman MIRV Conversion
AI disclosure: built using Claude Opus 5.5.
**This mod is lightly tested. Please report any bugs in the comments and include your HD2Runtime log (see the bottom of this page).**
## Required mods
- **Bingus Shared Loader** v15+ (load it **last**)
- **HD2Runtime** 0.28.0+
- **Mod Options Menu** (optional, v18+ Loader): only needed to change the settings
## What it does
Turns the GR-8 Recoilless Rifle's HE mode into a Fatman MIRV: one trigger pull fires a spread of **GP-20 Ultimatum shells**, 6 by default. Hold **Reload** to pick from the game's own ammo menu:
- **HEAT**: the normal Recoilless rocket with vanilla accuracy
- **HE**: the MIRV spread of Ultimatum shells
Your real Ultimatum pistol is unchanged.
## How to use it
1. In Arsenal, import the ZIP and enable it together with Bingus Shared Loader and HD2Runtime. Put the Loader last, then Purge and Deploy.
2. Call in a Recoilless and hold it. Give it **10-30 seconds** the first time while the mod sets up the spread.
3. Hold **Reload** to switch between HEAT and HE.
4. Settings are in **Escape > MODS > Fatman MIRV**:
- **Ultimatum spread**: turning it off gives you the vanilla Recoilless back (call in a fresh one)
- **Shells per shot**: 1-12, default 6
- **Spread**: 5-1500, default 500. This only affects the MIRV shells; HEAT always stays accurate.
## Quirks / known issues
- **Setup delay:** after you first hold a Recoilless, and again after it's been out of your hands for a few seconds (death, drop, pickup), the mod needs 10-30 seconds to find it. Until then both modes fire with a wide spread.
- **Possible light stutter** while it searches.
- **Conflicts** with other mods that change the Recoilless or its spread.
- **Memory-only:** restarting the game always restores the vanilla Recoilless.
- **Game updates** will likely disable it until it's updated. If the game data doesn't match exactly, it refuses to change anything.
- **Use at your own risk:** this mod writes directly to the game's memory.
## Reporting bugs
Please comment with:
1. What you did and what happened
2. Your HD2Runtime log. Paste this into PowerShell, then paste the result into your comment:
Get-Content "$env:LOCALAPPDATA\CowboyBingus\Helldivers2\Logs\HD2Runtime.log" | Set-Clipboard
## Credits
- Projectile record discovery adapted from **HD2 Grenade Contact Detonation** by etxp (MIT)
- **HD2Runtime** by skyeshade
- Tested by Gub
AI disclosure: built using Claude Opus 5.5.
**This mod is lightly tested. Please report any bugs in the comments and include your HD2Runtime log (see the bottom of this page).**
## Required mods
- **Bingus Shared Loader** v15+ (load it **last**)
- **HD2Runtime** 0.28.0+
- **Mod Options Menu** (optional, v18+ Loader): only needed to change the settings
## What it does
Turns the GR-8 Recoilless Rifle's HE mode into a Fatman MIRV: one trigger pull fires a spread of **GP-20 Ultimatum shells**, 6 by default. Hold **Reload** to pick from the game's own ammo menu:
- **HEAT**: the normal Recoilless rocket with vanilla accuracy
- **HE**: the MIRV spread of Ultimatum shells
Your real Ultimatum pistol is unchanged.
## How to use it
1. In Arsenal, import the ZIP and enable it together with Bingus Shared Loader and HD2Runtime. Put the Loader last, then Purge and Deploy.
2. Call in a Recoilless and hold it. Give it **10-30 seconds** the first time while the mod sets up the spread.
3. Hold **Reload** to switch between HEAT and HE.
4. Settings are in **Escape > MODS > Fatman MIRV**:
- **Ultimatum spread**: turning it off gives you the vanilla Recoilless back (call in a fresh one)
- **Shells per shot**: 1-12, default 6
- **Spread**: 5-1500, default 500. This only affects the MIRV shells; HEAT always stays accurate.
## Quirks / known issues
- **Setup delay:** after you first hold a Recoilless, and again after it's been out of your hands for a few seconds (death, drop, pickup), the mod needs 10-30 seconds to find it. Until then both modes fire with a wide spread.
- **Possible light stutter** while it searches.
- **Conflicts** with other mods that change the Recoilless or its spread.
- **Memory-only:** restarting the game always restores the vanilla Recoilless.
- **Game updates** will likely disable it until it's updated. If the game data doesn't match exactly, it refuses to change anything.
- **Use at your own risk:** this mod writes directly to the game's memory.
## Reporting bugs
Please comment with:
1. What you did and what happened
2. Your HD2Runtime log. Paste this into PowerShell, then paste the result into your comment:
Get-Content "$env:LOCALAPPDATA\CowboyBingus\Helldivers2\Logs\HD2Runtime.log" | Set-Clipboard
## Credits
- Projectile record discovery adapted from **HD2 Grenade Contact Detonation** by etxp (MIT)
- **HD2Runtime** by skyeshade
- Tested by Gub
