求生之路2，如何解锁50个幸存者救援与急救成就？

僵尸

网络用户：闲聊之人（改编表达） 　　以下所说幸存者即玩家4个人，感染者即普通小僵尸 　　Helping Hand Revive 50 incapacitated Survivors. 20 拯救50个濒临死亡（每人每张图只有3次机会）的幸存者 　　 Field Medic Heal 25 Survivors with a first AId kit. 20 用急救工具拯救25个幸存者 　　 Pharm-assist Give pAIn pills to 10 Survivors. 20 把止血药给10位幸存者 　　My Bodyguard Protect any Survivor from an attacking Infected 50 times. 15 保护幸存者被 感染者攻击50次 　 Dead Stop Punch a Hunter as he is pouncing. 10 用拳打正在突袭的 hunter猎手（僵尸boss） 　 Cr0wnd Kill a Witch with a single headshot. 30 用暴头的方法杀死 Witches 女巫（僵尸boss） 　 　 Untouchables No Survivors take damage after contacting the rescue vehicle. 30 当到达指定地点后，联系并等待营救车接幸存者过关过程中，保证没有一个幸存者受到伤害 　 Drag and Drop Rescue a Survivor from a Smokers tongue before he takes damage. 20 在 smokers 烟鬼（僵尸boss）攻击自己队友前，帮助队友免受伤害 　 Blind Luck You or another Survivor take no damage after being vomited on by a Boomer. 20 你或者队友被 Boomers 炸弹魔（僵尸boss）使用呕吐攻击后，没有受到其他感染者的伤害 　 Akimbo Assassin Survive an entire campAIgn using only pistols. 30 只使用手枪完成一个战役(5张地图) 　 Hero Closet Rescue a Survivor trapped in a closet. 10 抢救被围困的幸存者 　 Hunter Punter Shove a Hunter off of a pinned and helpless Survivor. 10 把 猎手从一个被其捆住的幸存者推开 　　Tongue Twister Free yourself from a Smoker who has grabbed you with his tongue. 20 当你被 smokers 烟鬼的舌头攻击缠住后，自己逃脱 　　No Smoking Section Kill 10 Smokers as they are pulling helpless Survivors. 15 杀死10个正在用舌头攻击幸存者的 smokers 烟鬼 　　101 Cremations Set 101 Infected on fire. 20 让101个感染者着火 　　 Do Not Disturb Sneak past all Witches in a campAIgn without disturbing one. 20 悄悄的从Witches 女巫身边走过，不打扰它 　　Man vs Tank Single-handedly kill a Tank. 30 独自杀死一个 tanks 坦克（僵尸boss） 　　Tankbusters Kill a Tank without it dealing any damage to a Survivor. 20 不费血杀死一个tanks 坦克 　　Safety First Play an entire campAIgn with no Survivors taking friendly fire damage. 30 完成一个战役(5张地图)，确保没有一个幸存者打到队友身上 　　 No-one Left Behind Beat a campAIgn with all 4 Survivors. 20 用4个幸存者完成一个战役(5张地图) 　　Unbreakable Finish a campAIgn without ever being healed. 30 不使用任何加血包 过任何一个战役(5张地图) 　　Witch Hunter Kill a Witch without any Survivor taking damage from her. 20 杀死一个Witches 女巫 ，保证其他队友不受到伤害 　　 Red Mist Kill 1000 Infected with a mounted machine gun. 20 用机枪杀死1000个感染者 　　Pyrotechnician Blow up 20 Infected in a single explosion. 20 用炸弹炸死20个感染者 　　Zombie Genocidest Kill 53,595 Infected. 20 杀死53595个感染者 　　 Dead Giveaway Heal a fellow Survivor when your own health is below 10. 10 当自己的血量低于10hp的时候，给自己的队友加血 　　Stand Tall Survive a campAIgn without being incapacitated. 20 完成一张图，没有陷入 濒临死亡状态 　　Zombicidal Maniac Survive any campAIgn on Expert. 30 用专家模式完成一个战役(5张地图) 　　What Are You Trying to Prove? Survive all campAIgns on Expert. 35 用专家模式完成所有地图 　　 Nothing Special Survive a campAIgn with no Survivors taking damage from Special Infected. 30 完成一个战役(5张地图)，在此期间没有一个队友受到boss的攻击 　　 Burn the Witch Light a Witch with a Molotov. 10 用燃烧弹攻击Witches 女巫 　　 Towering Inferno Light a Tank with a Molotov. 10 把手榴弹扔在 tanks 坦克 身上 　　Spinal Tap Kill an Infected with a single blow from behind. 10 从感染者背后炸死它 　　Stomach Upset All Survivors complete a campAIgn without being vomited on. 20 过关，并且没有被 呕吐攻击 　　BrAIn Salad Make 100 headshot kills. 15 暴100个僵尸头 　　Jump Shot Headshot a Hunter while hes leaping. 20 在hunters 猎手 跳跃的过程中暴头 　　 Mercy Killer Survive the No Mercy campAIgn. 15 完成 No Mercy 这个战役(5张地图) 　　 Back 2 Help Leave a safe room to save an incapped teammate and bring them back safely. 20 　　 Toll Collector Survive the Death Toll campAIgn. 15 完成 Death Toll 这个战役(5张地图) 　　Dead Baron Survive the Dead AIr campAIgn. 15 完成 Dead AIr 这个战役(5张地图) 　　 Grim Reaper Survive the Blood Harvest campAIgn. 15 完成Blood Harvest 这个战役(5张地图) 　　Ground Cover Save another Survivor from a Special Infected while on the ground. 30 帮助队友逃离僵尸boss攻击 　　Clean Kill Shove a Boomer and then kill him without him splashing on anyone. 10 杀死Boomers 炸弹魔 并且保证队友没有被 呕吐攻击打中 　　Big Drag Drag a Survivor 100 feet with your tongue. 20 当你使用smokers 烟鬼时，用你的舌头攻击100英尺元的幸存者 　　 ChAIn Smoker Constrict two Survivors in one life as a Smoker. 20 使用smokers 烟鬼，在被杀死前，成功用舌头攻击卷到2名幸存者 　　Barf Bagged Cover four Survivors with Boomer bile at once. 20 使用Boomers 炸弹魔，用特殊呕吐攻击到4名幸存者 　　 Double Jump Pounce two different Survivors in one life as a Hunter. 20 使用hunters 猎手，被杀死前攻击2名幸存者 　　 All 4 Dead Kill all four Survivors in one life while playing as a Tank. 30 当使用tanks 坦克 的时候，在被杀死前 杀死4名幸存者 　　Dead Wreckening Dole out 5000 Total Survivor damage as a Special Infected. 20 当使用僵尸boss的时候，对幸存者累计造成5000伤害