ใน Left 4 dead ท่านสามารถสั่งให้ตัวละครของเกมพูดได้
โดยจำเป็นต้องใช้คำสั่ง vocalize ในการเลือกบทสนธนาที่จะนำมาพูด
สามารถสั่งได้ทันทีด้วยการเรียกใช้ Console ของเกม หรือ จะตั้งคำสั่งไว้กับปุ่มด้วยการ Binding
(ดูการ Binding ได้ทีนี่)

คำสั่งทั่วไป ใช้ได้ทุกตัวละคร Common Character Vocalizes

vocalize CallForRescue
vocalize EatPills
vocalize elevator_conversation
vocalize EmphaticArriveRun
vocalize PlayerAlertGiveItem
vocalize PlayerAreaClear
vocalize PlayerAskReady
vocalize PlayerChoke
vocalize PlayerCoverMe
vocalize PlayerDeath
vocalize PlayerFollowMe
vocalize PlayerFriendlyFire
vocalize PlayerHealing
vocalize PlayerHealingOther
vocalize PlayerHelp
vocalize PlayerHurrah
vocalize PlayerHurryUp
vocalize PlayerImWithYou
vocalize PlayerIncapacitated
vocalize PlayerIncoming
vocalize PlayerKillThatLight
vocalize PlayerLaugh
vocalize PlayerLeadOn
vocalize PlayerLedgeHangEnd
vocalize PlayerLedgeHangMiddle
vocalize PlayerLedgeHangStart
vocalize PlayerLedgeSave
vocalize PlayerLedgeSaveCritical
vocalize PlayerLookOut
vocalize PlayerMoveOn
vocalize PlayerNegative
vocalize PlayerNiceJob
vocalize PlayerNiceShot
vocalize PlayerNo
vocalize PlayerReviveFriend
vocalize PlayerSorry
vocalize PlayerSpotAmmo
vocalize PlayerSpotFirstAid
vocalize PlayerSpotGrenade
vocalize PlayerSpotPill
vocalize PlayerStayTogether
vocalize PlayerTaunt
vocalize PlayerThanks
vocalize PlayerVomitInFace
vocalize PlayerWaitHere
vocalize PlayerWarnBoomer
vocalize PlayerWarnCareful
vocalize PlayerWarnHunter
vocalize PlayerWarnSmoker
vocalize PlayerWarnTank
vocalize PlayerWarnWitch
vocalize PlayerWatchOutBehind
vocalize PlayerYes
vocalize PlayerYouAreWelcome
vocalize ResponseSoftDispleasureSwear
vocalize ReviveMeInterrupted
vocalize ScenarioJoin
vocalize smartlook
vocalize YouWelcome

คำสั่งพูดของ Louis เท่านั้น

vocalize Airport04_08a – “What did I tell ya? They’re trying to stop people from leaving”
vocalize Airport04_08c – “Christ almighty”
vocalize DontBeAnAss – “Don’t be an ass, Francis”
vocalize Farm02_path01a – “Damn straight”
vocalize Farm05_path07b – “Settle down Francis, just use that radio they’ll come”
vocalize Farm05_path09c – “They honest to god military”
vocalize FarmvampiresB – “There’s zombies, Francis”
vocalize Hospital02_path03b1 – “Gotta find another way!” or “This seem too easy”
vocalize Hospital02_path03c1 – “Gonna have to go topside”
vocalize Hospital04_path01a – “I’ve smelled worse”
vocalize IntroFarm3 – “We just need to find the train tracks and follow ‘em”
vocalize IntroFarm4 – “Alrighty”
vocalize IntroHospital – His opening spiel at the beginning of No Mercy campaign
vocalize IntroHospital03 – “Might not be a bad idea to get off the street” or “Good thinking”
vocalize ConceptBlock608 - About 6 different lines, dissing Francis
vocalize ConceptBlock639 - “I see peace on earth if I have to murder every one of these goddamn bastards”
vocalize ConceptBlock051 - “What?”
vocalize ConceptBlock515 - “Hello?”
vocalize ConceptBlock536 - “Come and get us!”
vocalize ConceptBlock556 - “Hey!”
vocalize ConceptBlock611 - “War of Attrition”
vocalize ConceptBlock663 - “Who-ho-ho!”
vocalize ConceptBlock696 - “They’re Zombies Francis” (*Whatever*)
vocalize ConceptBlock712 - “Francis, What don’t you hate?” (Vests)
vocalize ConceptBlock715 - *Short Laugh*

คำสั่งพูดของ Francis เท่านั้น

vocalize Airport04_08a – “Bill, I was the one who said that”
vocalize Airport04_08b – “Holy ***” or “That sounds about right!”
vocalize Farm05_path09c – “***, never thought I’d go looking for the military.”
vocalize airport04_vana - “I hate vans.”
vocalize IntroHospital02 - “I hate subways.”
vocalize Smalltown05_path03a - “I hate water.”
vocalize Smalltown02_path01a – “How the hell do you know that?” (LOUIS:: vocalize smalltown02_path01b)
vocalize Smalltown04_path05a – “I’m coming for ya Bill, keep your beard on”
vocalize RiversideIsDeadSpecialA – “That’s better than MY plan.”
vocalize IntroAirport01bc - “I hate planes.”
vocalize AynRandResponse - “I hate Ayn Rand.”
vocalize ConceptBlock009 - “Let’s see, I’m Francis and that’s Grandpa Bill and THERE’S ZOMBIES OUT HERE OPEN THE GODDAMN DOOR”
vocalize ConceptBlock023 - “We’re cops, open up!”
vocalize ConceptBlock040 - “Listen candy pants, we can make you open that goddamn door.” or 044
vocalize ConceptBlock044 - “Aw hell, everybody but us is either a zombie or an ***.”
vocalize ConceptBlock049 - “WHAT?”
vocalize ConceptBlock517 - “Uh, hello?”
vocalize ConceptBlock527 - “Attention Boat Owner, we are… the cops. I command you to pick us up.”
vocalize ConceptBlock537 - “We’re all set!”
vocalize ConceptBlock588 - “We’re all set!”
vocalize ConceptBlock558 - “Have a heart, we have a helpless old man with us.”
vocalize ConceptBlock596 - “Attention Army, this is… the cops.”
vocalize ConceptBlock607 - “What if just your beard starts to turn? Can I shoot that?”
vocalize ConceptBlock627 - “What?” [Louis says something.] “Whatever you say, Professor Monster.”
vocalize ConceptBlock629 - “Whatever you say, Professor Monster.”
vocalize ConceptBlock632 - “Most people do anything if a cop tells them to. Trust me.”
vocalize ConceptBlock633 - “Trust me”
vocalize ConceptBlock635 - “Hey, look on the bright side. If you don’t make it, I’ll still be really handsome.”
vocalize ConceptBlock637 - “Long enough to know you have a pretty mouth.”
vocalize ConceptBlock697 - “Whatever.”
vocalize ConceptBlock709 - [I hate everything but vests.]
vocalize ConceptBlock710 - [Same as above but starts later.]
vocalize ConceptBlock712 - “You know what I don’t hate? I don’t hate vests.”
vocalize ConceptBlock721 - “Hahaha, go to hell.”

คำสั่งพูดของ Bill เท่านั้น

vocalize Airport04_08a – “What did I tell ya? They’re trying to stop people from leaving”
vocalize Airport04_08c – “Christ almighty”
vocalize DontBeAnAss – “Don’t be an ass, Francis”
vocalize Farm02_path01a – “Damn straight”
vocalize Farm05_path07b – “Settle down Francis, just use that radio they’ll come”
vocalize Farm05_path09c – “They honest to god military”
vocalize FarmvampiresB – “There’s zombies, Francis”
vocalize Hospital02_path03b1 – “Gotta find another way!” or “This seem too easy”
vocalize Hospital02_path03c1 – “Gonna have to go topside”
vocalize Hospital04_path01a – “I’ve smelled worse”
vocalize IntroFarm3 – “We just need to find the train tracks and follow ‘em”
vocalize IntroFarm4 – “Alrighty”
vocalize IntroHospital – His opening spiel at the beginning of No Mercy campaign
vocalize IntroHospital03 – “Might not be a bad idea to get off the street” or “Good thinking”
vocalize ConceptBlock608 - About 6 different lines, dissing Francis
vocalize ConceptBlock639 - “I see peace on earth if I have to murder every one of these goddamn bastards”
vocalize ConceptBlock051 - “What?”
vocalize ConceptBlock515 - “Hello?”
vocalize ConceptBlock536 - “Come and get us!”
vocalize ConceptBlock556 - “Hey!”
vocalize ConceptBlock611 - “War of Attrition”
vocalize ConceptBlock663 - “Who-ho-ho!”
vocalize ConceptBlock696 - “They’re Zombies Francis” (*Whatever*)
vocalize ConceptBlock712 - “Francis, What don’t you hate?” (Vests)
vocalize ConceptBlock715 - *Short Laugh*

คำสั่งพูดของ Zoey เท่านั้น

vocalize Airport04_08c – “Holy ***!” or “They must have tried to prevent the infection from spreading”
vocalize BounceReaction – “Yeah, yeah I’m ready to bounce *giggles*”
vocalize IntroFarm4 – “Yeah… let’s do it”
vocalize IntroSmallTown2 – “Unless anyone has a better plan, I say we head there”
vocalize TakeShotgunZoey – “Groovy…”
vocalize ConceptBlock032 - “Open the goddamn door!”
vocalize ConceptBlock035 - “What?”
vocalize ConceptBlock037 - “What a ***”
vocalize ConceptBlock620 - “You’re an optimist, I’ll give ya that, Louis.”
vocalize ConceptBlock642 - “Oops, sorry!”
vocalize ConceptBlock647 - “Game over man, game over!”
vocalize ConceptBlock649 - *short laugh*
vocalize ConceptBlock654 - “So, um…yeah.”
vocalize ConceptBlock657 - “Louis *laugh*”
vocalize ConceptBlock661 - *hearty laugh*