Always been a big fan of this level, I really like the way it slowly unwraps itself as the map goes on. I used to think you had to wall run to get the berserk secret, which is funny in retrospect.
DISCLAIMER: By definition, the Doom demo viddumps I upload count as TAS. When recording, I disable palette changes for taking damage, picking up items, and picking up powerups which alone disqualifies the demos from being uploaded to DSDA. That said, all of the inputs are made in real time, in a single segment (no rewinds, save states, or external editing).
Demos are played back using DSDA-Doom with mostly default settings.
Original demos can be downloaded here: http://tinyurl.com/bdufp7vp
ドロシー presently has 209 views for Sigil across 8 videos, with approximately 1 hour of Sigil video on his channel. This is 4.58% of the total watchable video on ドロシー's YouTube channel.