the passing into the afterlife - l4d2 expert realism solo

i know that this isn't a requirement for the all expert achievement, but i know that this adds Lore. what i didn't know before i had attempted this is the knowledge i know now. apologies for me being bad at reading achievement lists (and english).
btw if you did not watch the previous video, you probably don't know that this is also a melee only run. very fun challenge brought to you by Me because i didn't look anything up about it and just decided to do all the campaigns on expert realism solo while doing melee only. then again you could probably tell this is a melee only run because i only use a melee and i refuse to pick up primaries.
also i was reading the l4d wiki while uploading this video and writing this description, and it was very funny when the difficulty article said that it was recommended to play expert or realism with actual human beings and i'm not doing that hahaha!!!