I've heard something about E4F10 that you can actually do a pistol start and kill everyone. But don't use your gun though, use your knife and stab them in the bottleneck. I don't want to try it because I don't have enough patience for it. I suggest you should try that out. :)
In the meantime, you can use LiveSplit, etc. to time RTA. The only thing the game records for time and statistics (Kills/Secrets/Treasure) is floors 1-8. Floor 9 (Boss Level) and Floor 10 (Secret Level) are not included. In running individual episode runs, also in 100%, I would recommend RTA on time. In ECWolf and GZDoom, it's recommended to have the automap displayed to track the stats especially on floors 9 & 10 before exiting the level.
Can I run the base and also finish the 2 DLCs? Battle Beerus and Golden Frieza?