Barotrauma Die Hard

DieHard aims to resurrect the cold, dark, and suffocating atmosphere of Barotrauma’s classic beta versions. Powered by advanced C# scripting, DieHard seamlessly integrates an array of experimental mechanics that transform the game into a true deep-sea survival nightmare.

Join our Discord to dive deeper, share feedback, and chat with the community: https://discord.gg/xDkUDt3gzB

TECHNICAL REQUIREMENTS (CRITICAL)

To ensure the mod functions properly and to prevent multiplayer desync, the following are STRICTLY REQUIRED for both Singleplayer and Multiplayer:

Client-side Lua execution must be enabled.

C# scripting must be permitted to run on the client.

defualt zoom changed to 3x in submarine, 2.2 in open water, 2.4 in outposs. Secondary mouse button can enable "far look" mode. (Original concept invented by the mod in 2023)

Main Features

Basic Game Play

The hull protects you from the crushing pressure, but the freezing water will still claim you. Ballast pumps now utilize high-pressure air to displace water, so stay away from the ballast tanks unless absolutely necessary. Submarines are no longer easy to sink, but they must be maintained with absolute precision. Mirroring the classic beta versions, talents and gene-related items have been completely removed.

Realistic Guns

Die Hard currently has the most realistic weapons. Press 'R' to initiate smooth source-code-level reload animation. Double 'R' to do the fast reload. Guns have realistic attachments: silencers, scopes, lasers. They change the crosshairs and firing sound accordingly. This is the only mod where attachments have real visual affects. Laser pointers can correctly points at target instead of just a modified flashlight.

Enterable Room

While seen elsewhere now, this mod is the pioneer of the true "inner-room" concept. Click the door, and step inside a real, physical room.

Better yet, it is fully optimized for AI bots. Bots can freely navigate, interact, and work inside these rooms just like you, without pathfinding issue. True depth for the Diehard experience.

Monster Harvesting

Turn dead meat into hard cash. Slay deep-sea horrors, gather their rare parts, and trade them with merchants for premium rewards. Capitalize on the dangers of Europa.

Dynamic Physics

Proper body for many items. More collisions in real time.

Total Submarine Destruction

When submarine's overall hull integrity drops below 65%. The submarine will have a mainframe failure and snap into two at the location where it got the last hit.

Air System

Prototype concept introduced by Evilfactory in 2022, Die Hard is the first mod that applies the air exchange feature (in around 2023). With years of develop, the air system now is a unique concept of the game. CO, CO2, Chlorine, high pressure gas, and even temperature. They all affect your submarine environment.

Locations

Every biomes now has its unique module sets. Some are even on the base of the ocean.

Submarine Maintenance

Your submarine is a fragile ecosystem. Lamps, vents, and turrets now degrade and break over time. Worse, monsters will deliberately target your turrets first to disarm you. Repairs now require physical parts—nothing is free. Furthermore, powered devices must be unpowered before you can safely fix them. Maintain your sub with professional care, or sink.

In Door Combat

Death comes quicker. Better weapon, better armor, higher skills determine who stays who packed. Enemies now can see through glass door. Use melee as your last resort! One hit in enemy's hand can force dropping their holdings.

Fight Underwater

There is no solid ground to catch you anymore. Once your sub sinks, it falls infinitely into the abyss. You must seal the breaches before the extreme deep-sea pressure crushes the entire hull to pieces. Diehard Buoyancy & Physics: Class-Based Buoyancy: Scout (25%), Attack (20%), Transport (35%). Ballast Importance: Ballast tanks take 100% flooding impact, while non-ballast rooms have a safety threshold and take only 50%. Water Resistance: Conventional weapons are useless at a distance underwater. Use the submarine monitor to track hull integrity before it's too late.

While coil guns and chain guns are very effective against organic targets. They are less effective against personnel in hulls in submarine warfare, unless some fools try to board the ship openly. But you can still wash the deck by blind shooting the possible areas. EMP shells can black out sturdy targets that are normally hard to break. Armor Piecing Incendiary Shell can go through one layer of hull and violently burns inside. Acid Shell is good for burning through multiple layers of hull given time.

Advanced Upgrades

Total customization is now in your hands. Tear your sub apart and rebuild it as you wish in the upgrade store. Swap out engines, convert standard supply cabinets into heavy weapon holders, or strip the hull down to its bare bones.

Overhaul your ship to survive the deep, but plan wisely—every submarine has its strict modification limits.

Destroyable Items

Don't like the face of the outpost manager? Beside than killing him, you can totally trash his outpost. Many things in the outposts now react with bullets. Lamps, monitors, chair, vent, fire extinguisher holders, you name it.

Special Thanks to evil factory for helping in Lua The following list displays assets that this mod modified or straight out merged. The usage of these assets has been approved by the original authors.

1. Many example lua that is used for learning purpose written by Evil Factory.
2. Item Collision mod. Modification: instead of all-out collision. Die Hard makes only certain items have collision and most items only collide with ragdolled characters.
3. More abandoned module. Modification: Removing monster scum and bandit items to make them normal looking.
4. Init.lua from Mechtrauma. A file from Mechtrauma for better lua organization.
5. Keypad. Used in the module elevator.
6. Ship yard module (not used)
7. Moveable sellable wreck. Traded with rail gun grapple of this mod

Special thanks to the supporters who made localizations:

1. Pepper (Russian)
2. slava (Russian)
3. 页月戈 （Simplified Chinese)