I will post playthrough videos or short clips about Left 4 Dead 2

Custom Campaign difficulty explanation (It is subjective)
★☆☆☆☆ Easy
★★☆☆☆ I
★★★☆☆ Standard
★★★★☆　I
★★★★★ Difficult

About playthrough videos
I often play custom campaigns on Advanced difficulty(sometimes Normal) with my friends.

Left 4 Dead 2: Road to Deep [Difficulty:★★★☆☆]
38:45
Left 4 Dead 2: Road to Deep [Difficulty:★★★☆☆]
Left 4 Dead 2: Titty Twister (Solo/Expert/No Damage/No Death/No Restart)
15:30
Left 4 Dead 2: Titty Twister (Solo/Expert/No Damage/No Death/No Restart)
Left 4 Dead 2: Alien Plague (Solo/Expert/No Damage/No Death/No Restart)
7:54
Left 4 Dead 2: Alien Plague (Solo/Expert/No Damage/No Death/No Restart)
Left 4 Dead 2: Lone Gunman -Christmas Carnival- (Expert/No Damage/No Death/No Restart)
21:04
Left 4 Dead 2: Lone Gunman -Christmas Carnival- (Expert/No Damage/No Death/No Restart)
Left 4 Dead 2: HalfDead -Chapter 2- (Solo/Expert/No Death/No Restart)
24:33
Left 4 Dead 2: HalfDead -Chapter 2- (Solo/Expert/No Death/No Restart)
Left 4 Dead 2: The Streets 16 -Gongmen City- (Solo/Expert/No Damage/No Death/No Restart)
13:04
Left 4 Dead 2: The Streets 16 -Gongmen City- (Solo/Expert/No Damage/No Death/No Restart)
Left 4 Dead 2: Blood Proof (Solo/Expert/No Death/No Restart)
16:40
Left 4 Dead 2: Blood Proof (Solo/Expert/No Death/No Restart)
Left 4 Dead 2: Silent Fear (Solo/Expert/No Death/No Restart)
18:24
Left 4 Dead 2: Silent Fear (Solo/Expert/No Death/No Restart)
Left 4 Dead 2: Lone Gunman -Winter Rain- (Expert/No Damage/No Death/No Restart)
24:21
Left 4 Dead 2: Lone Gunman -Winter Rain- (Expert/No Damage/No Death/No Restart)
Left 4 Dead 2: Glubtastic 5 [Difficulty:★★★★★]
1:43:24
Left 4 Dead 2: Glubtastic 5 [Difficulty:★★★★★]
Left 4 Dead 2: HalfDead -Chapter 1- (Solo/Expert/No Death/No Restart)
15:26
Left 4 Dead 2: HalfDead -Chapter 1- (Solo/Expert/No Death/No Restart)
Left 4 Dead 2: VR MISSIONS Remake (Solo/Expert/No Damage/No Death/No Restart)
12:40
Left 4 Dead 2: VR MISSIONS Remake (Solo/Expert/No Damage/No Death/No Restart)
Left 4 Dead 2: Lone Gunman -The Sacrifice- (Expert/No Restart/No Death)
21:23
Left 4 Dead 2: Lone Gunman -The Sacrifice- (Expert/No Restart/No Death)
Left 4 Dead 2: Dead Center: Halloween Edition [Difficulty:★★★☆☆]
28:07
Left 4 Dead 2: Dead Center: Halloween Edition [Difficulty:★★★☆☆]
Left 4 Dead 2: Culling of Azeroth
13:50
Left 4 Dead 2: Culling of Azeroth
Left 4 Dead 2: Lone Gunman -Autumn Fever- (Expert/No Damage/No Death/No Restart)
19:40
Left 4 Dead 2: Lone Gunman -Autumn Fever- (Expert/No Damage/No Death/No Restart)
Left 4 Dead 2: The New Land (Solo/Expert/No Death/No Restart)
11:33
Left 4 Dead 2: The New Land (Solo/Expert/No Death/No Restart)
Left 4 Dead 2: The Evil Within 2 [Difficulty:★★★★☆]
33:44
Left 4 Dead 2: The Evil Within 2 [Difficulty:★★★★☆]
Left 4 Dead 2: Lone Gunman -The Passing- (Expert/No Damage/No Death/No Restart)
22:29
Left 4 Dead 2: Lone Gunman -The Passing- (Expert/No Damage/No Death/No Restart)
Left 4 Dead 2: Lone Gunman -Halloween Carnival- (Expert/No Damage/No Death/No Restart)
32:51
Left 4 Dead 2: Lone Gunman -Halloween Carnival- (Expert/No Damage/No Death/No Restart)
Left 4 Dead 2: Cape Fear (Solo/Expert/No Death/No Restart)
18:52
Left 4 Dead 2: Cape Fear (Solo/Expert/No Death/No Restart)
Left 4 Dead 2: Lone Gunman -Dark Carnival- (Expert/No Damage/No Death/No Restart)
37:34
Left 4 Dead 2: Lone Gunman -Dark Carnival- (Expert/No Damage/No Death/No Restart)
Left 4 Dead 2: Lone Gunman -Dead Center- (Expert/No Damage/No Death/No Restart)
15:23
Left 4 Dead 2: Lone Gunman -Dead Center- (Expert/No Damage/No Death/No Restart)
Left 4 Dead 2: Catacombs de Orangetown. (Solo/Expert/No Death/No Restart)
17:04
Left 4 Dead 2: Catacombs de Orangetown. (Solo/Expert/No Death/No Restart)
Left 4 Dead 2: Lone Gunman -The Parish- (Expert/No Damage/No Death/No Restart)
21:37
Left 4 Dead 2: Lone Gunman -The Parish- (Expert/No Damage/No Death/No Restart)
Left 4 Dead 2: Parking Facility (Solo/Expert/No Death/No Restart)
11:36
Left 4 Dead 2: Parking Facility (Solo/Expert/No Death/No Restart)
Left 4 Dead 2: Lone Gunman -Crash Course- (Expert/No Damage/No Death/No Restart)
27:20
Left 4 Dead 2: Lone Gunman -Crash Course- (Expert/No Damage/No Death/No Restart)
Left 4 Dead 2: Green Walls -Extended- (Solo/Expert/No Death/No Restart)
18:56
Left 4 Dead 2: Green Walls -Extended- (Solo/Expert/No Death/No Restart)
Left 4 Dead 2: Lone Gunman -Blood Harvest- (Expert/No Damage/No Death/No Restart)
29:26
Left 4 Dead 2: Lone Gunman -Blood Harvest- (Expert/No Damage/No Death/No Restart)
Left 4 Dead 2: Lone Gunman -Cold Stream- (Expert/No Damage/No Death/No Restart)
13:44
Left 4 Dead 2: Lone Gunman -Cold Stream- (Expert/No Damage/No Death/No Restart)