# Left 4 Dead 2 Update - Left 4 Dead 2 - Product: Left 4 Dead 2 (https://whatsnew.fyi/product/left-4-dead-2) - Vendor: Valve - Date: 2023-08-22 - Original notes: https://store.steampowered.com/news/app/550/view/3646280012042428636 - Permalink: https://whatsnew.fyi/product/left-4-dead-2/releases/2023-08-22-update-left-4-dead-2 What's New is an index, not a publisher: every entry below links to the vendor's own release notes, which are the authoritative source. Entries are labelled where they are hand-curated sample data, pre-releases, or drawn from a secondary source such as a developer blog. Reuse: the summaries, labels and curation here are © What's New. Quote freely with attribution and a link back; wholesale republication of the corpus is not permitted — terms: https://whatsnew.fyi/terms. The vendors' own release notes remain their publishers'. --- - **fixed** — Fixed several exploits reported via HackerOne - **fixed** — Fixed controller navigation in some menus - **fixed** — Fixed not being able to open the train door in Crash Course when playing the Tank Run Mutation - **changed** — Only the original attacker gets credited for damage caused by exploding props - **changed** — Restored the knife's original horizontal swing trajectory - **fixed** — Fixed incorrect instructor lesson bindings for the Tank - **fixed** — Fixed LDR skybox rendering on low shader settings - **added** — Added new script functions AreAllSurvivorsInBattlefield, GetClosestCharacterWhoIsIT, GetClosestSurvivor, GetHighestFlowSurvivor, GetLowestFlowSurvivor, and GetRandomSurvivor - **added** — Added new response criteria TankActive and Chapter for script responses - **fixed** — Fixed numerous stuck spots across multiple maps in various game modes - **changed** — Restored window clip-hang bugs in Dead Center Map 1 to re-allow access to the rooftop in Coop mode - **changed** — Tank will now only spawn after Survivors have exited the elevator in Dead Center Map 1 Versus mode - **fixed** — Fixed issues with THE MAIN ATTRACTION Achievement in Dark Carnival Map 5 by adding more triggers - **changed** — Named the TLS Swamp gator Fred in Swamp Fever Map 1 - **changed** — Restored a shortcut in Hard Rain Map 2 and fixed the soft-lock where Survivors cannot progress if one player skipped the elevator - **changed** — Reduced jet strike trigger damage after the balcony drop in The Parish Map 4 Versus mode from 25 damage per touch to 2 damage per touch - **changed** — All sets of railings in No Mercy Map 2 will now appear for all players regardless of graphics settings - **changed** — Simplified The Last Stand Map 2 finale difficulty scaling to only increase on Advanced and Expert difficulties - **changed** — Lowered the number of required gas cans in The Last Stand Single Player by 25 percent An update has been released for Left 4 Dead 2. - Fixed several exploits reported via HackerOne. - Fixed controller navigation in some menus. - Fixed not being able to open the train door in Crash Course when playing the Tank Run Mutation. - Only the original attacker gets credited for damage caused by exploding props. - Restored the knife's original horizontal swing trajectory. - Fixed incorrect instructor lesson bindings for the Tank. - Fixed LDR skybox rendering on low shader settings. New response criteria: - "TankActive"- 0 means no Tank aggro, 1 means Tank is aggro. - "Chapter" - 0 is first map of mission. New Script Functions: - "AreAllSurvivorsInBattlefield" - Returns true if all Survivors are in the battlefield - "GetClosestCharacterWhoIsIT" - Returns the closest character who is IT - "GetClosestSurvivor" - Returns the closest Survivor to the passed origin - "GetHighestFlowSurvivor" - Returns the Survivor with the highest flow - "GetLowestFlowSurvivor" - Returns the Survivor with the lowest flow - "GetRandomSurvivor" - Returns a random Survivor Maps and Mutations: Dead Center Map 1:  - Restored window clip-hang bugs that were patched with TLS to re-allow access to the rooftop in Coop mode.  - Versus: Tank will now only spawn after Survivors have exited the elevator, and no later than leaving the kitchen. Map 3:  - Blocked a stuck spot at vending machine alternative path. Dark Carnival Map 1:  - Patched a rarer stuck spot at the swamp's cargo container.  - Patched an elaborate SI out of bounds exploit. Map 5:  - Addressed some issues with "THE MAIN ATTRACTION" Achievement by adding more triggers so it no longer fails if any Survivor disconnects or goes idle while on stage. Swamp Fever Map 1:  - Patched janky ladder near the ferry event.  - By popular community request the TLS Swamp gator is now canonically named Fred. Map 2:  - Blocked a stuck spot behind some rocks at the start near the parachutist.  - Blocked a stuck spot on a cypress knee near the parachutist area dock. Map 3:  - Blocked stuck spots at two sets of cypress knees around the event start area.  - Versus: Blocked a stuck spot for SI behind a bush to the left of the first bridge upon entering the water.  - Versus: Blocked a stuck spot for SI in the bush near the lantern/event start.  - Versus: Improve SI clipping of first ladder outside saferoom to allow drop through a large gap.  - Versus: Moved a TLS Infected ladder out of the Survivor's way at the start. Map 4:  - Versus: Blocked a stuck spot for SI behind a bush in the back of the enclosed hedge area. Hard Rain Map 2:  - Restored a shortcut that was patched with TLS; instead fixed the soft-lock where Survivors cannot progress if one player skipped the elevator. The Parish Map 2:  - Eliminate a stuck spot that a previous ladder patch created. Map 3:  - Versus: New ladder in far corner of manhole drop area to fix stuck . Map 4:  - Versus: Reduced a jet strike trigger after the balcony drop that previously dealt 25 damage per touch (75 total) to Survivors, down to only 2 damage per touch to behave like the other triggers. The Passing Map 1:  - Blocked a stuck spot in a corner behind a floodlight in the top floor after the alarm cars. Map 2:  - Fixed collision issue with clips on the stairs by the saferoom that caused noticeable teleporting when not on a local server. The Sacrifice Map 2:  - Versus: Delete func clip that blocks SI access into end closet. No Mercy Map 1:  - Lift anti-grief kill trigger off the ground to prevent an incap glitch.  - Versus: Add clip to patch a ladder shortcut at the start. Map 2:  - All sets of railings will now appear for all players regardless of graphics settings. Crash Course Map 1:  - Block rare stuck spot between the box wreck and traffic light. Map 2:  - Clip to prevent gas cans from falling between finale buses. Death Toll Map 3:  - Blocked a stuck spot at the top of a rock cliff cluster just after the church bus.  - Blocked a stuck spot between the clif _[Truncated at 4000 characters — full notes: https://store.steampowered.com/news/app/550/view/3646280012042428636]_