Here's a demo on Crispy Heretic: https://drive.google.com/file/d/1VAiJ6eNnLTaNM9Jn_tVMKKHaMl4ugwWa/view?usp=share_link
Awesome opening view toward the volcano, and I especially liked the way the final area looks. This was a really fun punchy map, and the gasbag generators felt like they took the center stage in terms of the gameplay. Excellent job placing them because they always felt simultaneously like a huge threat and a helpful tool.
There's a good amount of resources placed around the map, though I did feel that the cluster of time bombs closer toward the end was overkill, as there were much better means available for handling the final encounter, since the enemies and hostile terrain made them non-ideal to use. Time bombs would have been more useful at the start, but I liked the way the start played as it is. The invuln ring may also be overkill; I felt it was unneeded and would have taken away from the thrill of the ending area had I used it. Visually, the map looks gorgeous, though I felt the paper-thin looking rocks visible at around the 6:40 mark in the successful attempt did detract a little.
I went into the blue portal not realizing that was the exit. I would propose either to add the standard heretic flat that's used to mark exits as well (so that you have the flat AND the portal texture, plus the exit glitter), or else we could establish consistency across the entire wad so that all exits use the blue portal, and the blue portal is only used for exits. What do you think?
All in all, another outstanding, really fun-to-play map! Awesome details too, like the heretic-cute tent and campfire and the grave stones.
Oh, and two final things. 1. I just realized it is possible to run pacifist through the map pretty easily in ~30 seconds. I don't think that's a problem, but just wanted to mention it. 2. the reason that the portals don't work in dsda-doom seems to have to do with there being too many linedefs with actions too close together. I tried setting the linedefs that surround the whole glowing sector to WR teleport, and it worked just fine that way.
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Regarding the name for the project, THE ULTIMATE HERESY gets a thumbs-up from me!