Survive the Parish campaign.
|Achievement Name:||Bridge Burner|
|Achievement Requirement:||Complete entire Parish campaign.|
|Time to Unlock Achievement:||1 – 2 Hours|
|Recommended or Required Levels:||The Parish, Chapters 1 – 5|
|Points (XBox 360 Only):||20|
It’s not particularly hard to earn the “Bridge Burner” achievement in Left 4 Dead 2; most players will gain it without even trying to when they play through the campaigns the first time. All you have to do is complete the entire Parish campaign and survive the finale and you’ll earn the Bridge Burner achievement. It’s easiest to gain this achievement on Easy Mode, since you’re more likely to survive the finale.
Because Left 4 Dead 2 (like the original Left 4 Dead) is reported to have a bug with regards to players not earning campaign-based achievements if they join a game already in progress, it’s a good idea to you start your own Parish lobby, host a game locally or just play through the Parish campaign on Single Player mode to guarantee that you get the Bridge Burner achievement.