Fallout 4 was released in 2015, initially the hardest difficulty available was 'Very Hard', but in 2016, they released a 'Survival mode' which forced the player to manage food, water and rest meters whilst not being able to fast travel and dealing with much more difficult enemies. I have streamed a few playthroughs of Survival, but the speedrun eluded me until recently. I didn't expect to beat the World Record so soon, but a few newer strats helped me reduce the time by over 2 minutes. This run will be improved eventually, so lookout for more runs. Any questions, feel free to ask.