Rad Squirrel is the twenty sixth story arc in EGS:NP. It started with EGS:NP Comic for 2016-03-21 and ended with EGS:NP Comic for 2016-04-29 ("Welp"). It's not labeled as canon, possibly for similar reason as the Gaming Webcomic. It features Grace playing Fallout: New Vegas. While Tedd is next to her, most of story is in-game chibi.
It starts with George mentioning that you can play Fallout: New Vegas without killing. Grace took it as challenge and tried to refrain from killing even beasts or robots, despite her actually losing karma for not helping people. It ultimately failed when she found the Legion faction: they were so terrible she murdered them all.