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|1: Entryway||0:05.43 WR||0:30|
|2: Underhalls||0:26.94 WR||1:30|
|3: The Gantlet||0:18.89 WR||2:00|
|4: The Focus||0:20.71 WR||2:00|
|5: The Waste Tunnels||0:20.29 WR||1:30|
|6: The Crusher||0:45.51 WR||2:30|
|7: Dead Simple||0:05.80 WR||2:00|
|8: Tricks and Traps||0:18.91 WR||2:00|
|9: The Pit||0:34.49 WR||4:30|
|10: Refueling Base||0:23.83 WR||1:30|
|11: Circle of Death||0:26.86 WR||3:30|
|12: The Factory||0:36.43 WR||2:30|
|13: Downtown||0:53.31 WR||2:30|
|14: The Inmost Dens||0:08.57 WR||2:30|
|15: Industrial Zone (S)||0:28.60 WR||3:30|
|31: Wolfenstein (S)||0:31.97 WR||2:00|
|32: Grosse||0:11.31 WR||0:30|
|16: The Suburbs||0:10.00 WR||2:30|
|17: The Tenements||1:24.66 WR||7:00|
|18: The Courtyard||0:20.94 WR||2:30|
|19: The Citadel||0:31.71 WR||3:30|
|20: Gotcha!||0:33.37 WR||2:30|
|21: Nirvana||0:14.54 WR||4:00|
|22: The Catacombs||0:13.69 WR||2:30|
|23: Barrels O' Fun||0:32.86 WR||3:00|
|24: The Chasm||0:27.51 WR||2:30|
|25: Bloodfalls||0:38.29 WR||2:30|
|26: The Abandoned Mines||0:30.74 WR||5:00|
|27: Monster Condo||0:11.97||5:30|
|28: The Spirit World||0:32.83 WR||7:00|
|29: The Living End||1:10.83||5:00|
|30: Icon of Sin||0:29.97||3:00|
|Total Time||15:01.80 WR||95:00|
|*Measured using Budko's PrBoom modification.|
|(S): Secret exit. WR: world record|
The demo was recorded on a modified version of PrBoom written by Budko himself. This version was the base for PrBoom+. The main feature of his custom version not present in the original PrBoom is the ability to activate permanent strafe50. All versions of PrBoom include slow-motion recording and save states, the latter of which Budko used sparingly. 
Budko's run eclipsed the March 2000 tool-assisted record of 16 minutes, 17 seconds by Marijo "Sedlo" Sedlic in 30uv1617. This was achieved by taking advantage of newly-discovered routes and tricks, and the use of the strafe50 modification.
Since releasing 30uv1441, Budko has also set world records for tool-assisted runs in three out of the four episodes in Ultimate Doom: Knee-Deep in the Dead in 04:05; Inferno in 03:15; and Thy Flesh Consumed in 02:32.
30uv1441 is not a maxed-out speedrun. On the Doomworld forums in January 2004, Budko announced the possibility of recording an updated Doom II speedrun with a running time under 14 minutes, but never did it.
A built run in 14:02, by Adrian Danis (RamboBones), exists.