Barotrauma — Out now: Unto the Breach Update release notes

Hello everyone!

The Unto the Breach update has just been released. Be sure to update your game now for…

Fully overhauled PvP mode with two new mission types, new maps and a slew of other improvements.
Improvements to alien ruins: new modules, traps, puzzles and events.
Rebalanced gene splicing system and new craftable dementonite items.
Three new Husk enemies: the Exosuit Husk, Husk Prowler and Husk Chimera.
36 new outpost modules.

Read more about the update in last week’s preview post and find the full list of changes at the end of this post. Once more unto the breach!

v1.6.17.0

`PvP and combat:

Added outpost deathmatch mission type. Teams spawn at different sides of a colony, and need to get x kills to win (configured using a slider in the server lobby). There are periodic weapon/ammo drops around the outpost. The ammo drops spawn more destructive weapons and ammo as the round progresses.
Added "king of the hull" mission type. The teams must stay in control of a beacon station for x seconds to win (configured using a slider in the server lobby).
Separatists spawn with different gear in the PvP mode to make it easier to differentiate between the teams.
New settings for the PvP mode: multiplier for stuns, option to disable monster and wreck spawns.
Added a perk system that can be used to purchase perks such as extra gear, turrets, submarine upgrades and talents for PvP and mission rounds.
Added "boarding pod", an item you can go inside and launch through a depth charge tube. The pod penetrates through submarine walls, allowing rapid boarding of enemy subs.
Added railgun and coilgun harpoons. Can be used to reel enemy subs and other large targets closer to your sub.
More options for controlling the team assignment logic in the PvP mode:
- Split team choice logic into two modes: Player Preference (the old behavior) and the new Player Choice mode (players are free to choose their team).
- Added a server setting for auto-balance threshold (how big of a difference there can be in team sizes before the server forces them to be rebalanced).
Option to send chat messages only to your team in the server lobby. Only works when Player Choice mode is enabled (because in the Player Preference mode the teams aren't known in the lobby yet).
Three new background music tracks for the outpost deathmatch mode.
Option to select the outpost in the outpost deathmatch mission type (or any modded mission type that supports selecting the outpost).
Show the opposing team's names as red, even when spectating (previously separatists were always red when you're not controlling a character).
Name tags are more visible in PvP (they're no longer hidden when the character is in a different room, nor faded out when the cursor is not near the character).
The team you're on is shown above the crew list.
Option to choose different submarines for both teams.
Sonars display the approximate position of the enemy submarine in sub vs sub PvP missions. Can be disabled from the server lobby.
PvP mode levels are much smaller, making submarine vs submarine matches faster.
Stun weapons reworked and now cause movement spasms before stunning.
Flamers can set characters on fire.
Grenades can be "cooked" (pulling the pin to trigger a timed explosion) by pressing E while holding one.
Stun grenades blind and deafen the target for a while.
Incendium grenades no longer set the whole room on fire; instead, they start a more localized fire that can also set characters on fire.
Acid grenades now spread gas around a bit more.
Detonators now get damaged by explosions and always have a 0.2 second delay before triggering and made them craftable
Added a timed detonator variant that can be set to explode with a 0-60 countdown, which doesn’t require wiring to use.

Alien ruins:

New modules: shrine, research facility, current generator room and workshop.
Updated all alien ruin modules: new puzzles and traps, improvements to old puzzles, visual improvements.
New lore-heavy three-part event chain that takes place in research outposts, and progresses when ruin missions are completed.
Made walls and doors much harder to destroy to encourage getting past the puzzles and obstacles in other ways.
Added a weaker version of the ruin walls, to be used in specific spots in the ruins.
Alien power cells can be charged in alien generators.
Most alien devices are now destructible.
Alien terminals have been reworked to send out a signal when there's a trinket inside: can be used for creating puzzles that require keeping the trinket in the terminal, meaning you can't just reuse the same trinket for every terminal but need to think about where to place it at any given time.
Improvements to alien device sprites.
New alien containers/storages: alien assembly device, alien storage vat and alien sample display.
New alien devices: alien current generator and alien toxins generator.
New decorative alien structures.
Additional loot spawning to chests and other containers, making exploring ruins more worthwhile and especially expands the ability to pick up (unidentified) genes along the way.
Fractal guardians were given additional guardian-only pathways and doorways in ruins, so they can navigate through the modules more effortlessly.
Alien turrets deal significantly more damage.
Alien generators indicate more clearly when they're enabled or disabled (adjusted the lights).
Alien current generators show more clearly (with bubbles) that they're enabled, pushing the player back.
New alien module: workshop. Introduces repair pods where guardians can hide in.

Husks:

Three new husk variants: Prowler, Exosuit and Chimera.
Improved the appendages (ovipositors) coming from the husks’ mouths.
There's a chance that corpses in wrecks are husks.
Husks can play dead.
The amount of husk infection resistance given by e.g. antibiotics stays constant over the duration of the meds. Makes the effects of the meds a lot more intuitive / predictable.
Significantly buffed calyxanide damage on husks.
Fixed failed calyxanide injections not doing anything (happens occasionally when the medical skill is low enough). Now applies halved duration instead, like on other poisons/meds.
Added minor burn reduction on all husks allowing them to (slowly) recover from burn wounds.
Cultist robes require less reputation to buy, Zealot robes require more.
Zealot robes no longer block transformation. Full husk transformation immunity was too powerful, which made husk genes and husk symbiosis much less valuable.

Gene splicing:

Various changes to gene splicing to make it easier to refine genes, swap between different types of genes at will, and make tainted genes more useful (rather than something that's essentially "permanently ruined"):
- Removing genetic materials from a splicer doesn't destroy the material.
- Combining genes can remove taints if one gene is 100% pure.
- Dying with genetic materials equipped taints the material.
- When refining genes, the lower quality gene's quality now affects how much it will improve the quality of the higher quality gene - meaning that using higher-quality genes for refining is more effective than low-quality genes.
Changed the husk immunity genes to instead slow down the infection at lower quality to make higher quality husk genes actually worth getting.
Mudraptor gene quality affects the damage and damage protection of the beak.
Spineling gene quality affects the damage done by spineling spikes.
Effects from gene splicing aren't shown on health scanners (which made it difficult to see the relevant afflictions when treating someone).

Optimizations:

Optimizations to character creation. Reduces the lag spikes when players respawn.
Optimized the way afflictions apply overlays to limbs (had an unnecessarily large performance impact when there were lots of characters with a large number of afflictions).
Minor optimization to the way items in a characters' inventory stick to the position of the character.
Minor UI optimizations.
Improved performance when debugdraw is enabled.
Minor optimizations to level wall rendering.

Talent changes and fixes:

Reworked Europabrew to be more of a double-edged sword: it's a cheap cure for any poison, but it also increases ALL types of damage taken (works on monsters too!), not just acid damage.
Fixed "Extra Powder" talent not affecting depth charges.
Fixed weapons skill gain and medical skill gain from certain talents working the wrong way around.
Sulphuric Acid Syringe recipe changed and renamed to Crimson Acid. Now causes a very significant slow and much more damage over a longer duration.
"Macrodosing" talent had acid burn damage boost removed, but increased the amount of poison applied, making it much easier to poison big enemies.
"What A Stench" talent had acid burn damage bonuses reduced, to allow acid burn weapons to be stronger even for those without these specific talents.
Buffed "Modular Repairs" talent: repair pack is now a "multitool", essentially a combination of a screwdriver and wrench which repairs slightly faster, and is no longer consumed when used. The talent also gives one free "Modular Repairs" submarine upgrade.
Differentiated the "Art of Submarine Warfare" book given by talents from the one you can purchase from outposts (different names and sprites). Previously these looked identical, and it seemed like a bug when they didn't stack and gave a different amount of skill.
Fixed "War Stories" book seemingly giving no skill increase sometimes. The amount of skill the book gives is proportional to the number of kills the "author" of the book got, and diminishes the higher the reader's skill is. That meant the book sometimes increased the skill by less than 1 (only making it progress toward the next level), which didn't cause a skill increase notification to pop up.
Fixed "Bounty Hunter" and "Logistics Expert" not showing the additional reward in UI in multiplayer.
Fixed "Tasty Target" still making characters super loud (and visible on the sonar).
Fixed "Lightning Wizard" talent description not mentioning it only affects melee attacks.
Fixed reputation gain bonus from the "Protect and Serve" talent being multiplicative, meaning you could get ridiculous amounts of rep if you have multiple security officers with the talent.
Fixed "Mule" talent not working with physicorium bars.

Miscellaneous changes and additions:

2 new research modules.
3 new medical modules.
2 new security modules.
6 new admin modules.
4 new crew modules.
4 new docking modules.
4 new engineering modules.
4 new clown modules.
2 new Church of Husk modules.
New bath house and nightclub modules.
3 new storage modules, with 4 new events (providing extra loot and some potential challenges).
Added module ‘probability’, meaning some optional modules (such as storage modules) do not always spawn.
New "gravity shell" ammo types for railgun and flak cannon. Fabricated from dementonite.
New "mindsense" item that temporarily gives you the ability to sense living characters through walls. Fabricated from dementonite.
Clown crates can be carried with a character inside.
Jukeboxes play music, the track can be changed by interacting with the jukebox. Also added new "speaker" items that work the same as jukeboxes.
7 new achievements:
- Get Out Alive: get through the entirety of the Cold Caverns without losing your character in permadeath mode.
- The Abyss Beckons: lose a character in the permadeath mode.
- King of the Hull: win a PvP King of the Hull mission.
- Hide And Seek: kill a Cave Mantis.
- Ancient Novelty: destroy an alien terminal using alien curio.
- What Smirks Below: kill a psychoclown on a beacon station.
- Europa's Finest: complete a campaign in ironman mode in multiplayer!
Added the ability to load saves from back-up save slots, rather than just one save slot per campaign (allows going back further into the past, to avoid getting stuck).
Disabled portable item finders working outside of the player subs. The intention is that they can't be used as a map of unknown places. Can be adjusted in xml for modding.
Some new stair variants.
Made the water ambience sounds inside the sub a little more quiet.
Adjusted the low pass filter that muffles audio that's coming from far away or from behind obstacles: the sounds are now muffled more heavily.
Made the ping estimations in the server list more accurate. They are still not perfect, because due to the way SteamP2P works (with the connection potentially getting relayed through Valve's intermediary servers), it can be hard to determine the ping in advance without actually connecting to the server.
Adjusted railgun shells and depth charges to show the 'explosives' icon. Other items can still be placed into them, but most don't actually do anything. This should help players to understand it's mainly intended for explosives.
Adjusted the names and descriptions of turret ammunition, to be more clear (and more easily searchable) on what turret they're used with.
Circuit boxes can be set to require a specific ID card tag to access.
The docking circuit boxes in vanilla subs require a captain's ID card to access.
One-handed riot shields (to make them actually useful!).
Added "surveillance center" item which can be connected to multiple cameras, which can be toggled through with buttons on the UI. There's an example item assembly showing how to connect the center to multiple cameras using the new output selector components.
Output selector component (the technical term is "demultiplexer"). A component that has one input connection, and multiple output connections, and allows you to choose which of the output to send the input signal to.
Input selector component (the technical term is "multiplexer"). A component that has multiple input connections, and one output connection, and allows you to choose which of the input signals should be forwarded to the output.
Made the sound effects and camera shake a lot more noticeable when approaching crush depth.
Option to make circuit boxes require a specific ID card to access.
Removed the restriction of 2 security officers and 2 medics per crew in multiplayer.
Spectators can focus the camera on a character by clicking on one on the crew list.
Easier testing of outpost modules in the sub editor: when launching the test mode with an outpost module that's suitable for some outpost, the editor generates the whole outpost as opposed to just the single module.
Higher-res collider indicators (visible in the character editor and when debugdraw is on).
Adjusting the audio level sliders changes the volume immediately (as opposed to when you click "apply") to make the volume easier to preview.
Added options for renaming and deleting local mods.
Added an option to copy a workshop mod to a local mod.
Fixed the context menu's "unsubscribe" button not working.
Copying a waypoint while holding Ctrl automatically links it to the original waypoint in the sub editor.
Option to choose the level difficulty in the level editor.
Crush depths for different levels of hull upgrades are visualized in the level editor.
Fixed BrokenSprites not showing up in the sprite editor.
Ctrl+C copies the sourcerect of the selected sprite or sprites in the sprite editor.
The total mass of the character is shown in the character editor. Note that the masses don't correspond to any "real units", but they may be of use if you e.g. want to make some status effects affect large monsters.

AI:

Fixed an issue in the medic AI that made them often use suboptimal medicine when there were better options available. The issue happened when the medic didn't have the meds readily available: when they started searching for the sub for suitable meds, they would accept any of the 4 most suitable ones even if there were more suitable options available.
Medic bots no longer use saline to treat infections. Saline has such a minor effect on infections that the bots could end up wasting huge amounts of it.
Bots are now able to change the fuel rods on exosuits.
Fixed bots being too eager to use welding tools and plasma cutters as weapons.
Defense bots are now much better at navigating inside the sub, and they can open doors and use ladders.
Fixed defense bots always being friendly to all humans, regardless of the team.
Defense bots can now be told to unfollow by interacting with "E" (play). You can also tell someone else's defense bot to follow you.
Defense bots show a green light when they are following a target.
Monsters can now see and target searchlights.
Fixed escorted NPCs getting turned hostile by the negative side-effects of medicine way too easily.
Fixed security officers starting to consider everyone in the outpost as "belonging to another crew" after they've been alerted in a jailbreak mission, causing them to do constant security inspections on each other.
Fixed low amounts of poisoning making bots say the target is mildly injured and doesn't need treatment.
Fixed bots being unable to heal husk infections.
Fixed bots recharging fulgurium batteries as soon as they're below 100% condition.
Fixed bots being unable to defend themselves if they are holding an item that cannot be placed in the inventory, such as a cargo scooter or a box. Now they can put the item on their back or drop it when necessary.
Fixed bots trying to store items like HMG in cabinets instead of putting it on their back when they don't need it.
Fixed bots wearing both diving mask and diving suit when the suit has no oxygen left and when a mask would suffice.
Fixed bots using repair tools in combat from an incorrect distance.
Fixed bots sometimes getting stuck in a flooding room. Happened in situations where the centers of the nearby safe hulls were far away from the current room, e.g. if the rooms were very large.
Fixed bots refusing to fix small leaks when there are no diving masks available but there are diving suits that they could use.

Fixes:

Fixed "mission equality check failed" error when you join an ongoing campaign in which the players have selected missions in an outpost, but not departed yet.
Fixed "lock default wiring" server setting locking components in all circuit boxes (even ones placed mid-round).
Fixed headsets not working on characters spawned via console command.
Fixed iron man mode staying "partially on" when the checkbox is left ticked, and a respawn mode other than permadeath is enabled, causing e.g. character loss to not get reverted when restarting the round.
Fixed escort and cargo missions still sometimes leading to locations with no outpost. Now these missions should not be offered if there's no adjacent outposts.
Fixed the sonar marker sometimes disappearing in one of the levels at the end of the campaign if the player stays too long in the level.
Fixed dropping a melee weapon mid-swing leaving its hit detection active, causing characters to take damage if they touch it afterwards.
Fixed monsters being unable to walk/swim backwards in multiplayer, causing the animations to look off in the case of e.g. monsters that back off after attacking.
Fixed mineral scanners working without power.
Fixed some faction events getting stuck when you choose the "ignore" option in the dialog.
Fixed wrecked coilgun loader still using the old sprite (that doesn't look like the normal loader).
Fixed lower docking port not being connected to the power grid in Camel, Orca 2, R-29 and Remora.
Fixed chitin being damageable.
Fixed beacon stations being often positioned in a different spot i