Saw that yesterday and was rather impressed. Especially since it was done in Survival mode.
Think they said that over £8000 was raised in total. Really glad I took part in it this year. Was good to do something worthwhile.
However I was going through my Twitch stream to look for a few bits to publish as highlights and for huge amounts of it there was no game audio being streamed, just my microphone audio.
Must have been an issue when I was switching games as some have audio and some don't. I'm mostly annoyed that I didn't have it for my Dark Souls run, where I nearly beat Ornstein and Smough on my 1st attempt before doing it on my 3rd try.
Though I do have a highlight of a nice double-headshot from Blood Dragon.