Left 4 Dead 2 Solo Expert Runthrough

This video offers 2½ minutes of highlights from a years-long project by a user usefully named "Titsonabull" to complete all 55 maps in Left 4 Dead 2 and its DLC in expert mode with no bots. For those interested in the full hours-long treatment this playlist and this playlist have the entire series of videos, revealing all the strategies used to accomplish this feat.