I walkthrough Left 4 Dead 2 Campaigns on expert in VR and run in place.
also I installed a bunch of mods to make L4D2 more fun.
This is long video that you can leave it on in background or while you are sleeping.
Alternative title: Left 4 Dead 2 But I run in real life through the entire campaigns
Timestamps
0:00 Intro
2:15 Dead Center
30:57 The Passing
54:08 Dark Carnival
1:36:20 Swamp Fever
2:03:22 Hard Rain
2:28:27 The Parish
2:57:56 The Sacrifice
3:15:02 Failed attempt
3:19:22 Successfully passed away attempt
3:24:13 No Mercy
3:49:45 Crash Course
4:11:43 Death Toll
4:36:58 Dead Air
5:00:34 Blood Harvest
5:32:06 Cold Stream
6:04:00 The Last Stand