So could i essentially do this speedrun in more then one set so for example time it till i cant do anymore, then log off load an autosave like it says in the rules later on and record the second half and time that seperately then at the end add up the two times to get my total and submit it. (id show the two times and what they add up to at the end for clarification aswell).

just dont feel like sitting there for like 3 to 5 hours straight playing this, good game but u gotta admit it would get a little tiring.

I dont know if this is serious or not but no you cant do that, but you shouldnt worry about that you can start learning the game maybe after a couple of missions you hate the speedrun and dont wanna play anymore and you dont have to worry about beign a long run or if you love the game a long run should not be an issue or just learn the dlcs both are less than 1 hour long

You can't splice or edit the videos so this wouldn't work. At all. It's a good speedrun and I enjoy it a lot. If you can't sit for the full thing do what Jugador said and just do the DLC...