So, over a year ago, Dungeon Crawl Stone Soup, another roguelike game, was updated to have a new god for its worship system: Ignis. I'm quite the fan of Ignis; in spite of it being designed to abandoned with the "Cinder Acolyte" start, I refuse to do so and I have even managed to win a few games with Ignis. I have decided to do a run in Demon based upon that after various similar failed runs with other demons.
Crown of Glory, with its many demon slots, is pretty much the beginner's relic as it is very lenient for that and Copy Saver, which can be very useful for building up your allies. The plan initially here was to have some abilities like Fiery Veil and Warmth shared among my more lasting allies, albeit I only got a small amount of usage out of any of those abilities; in fact, I ended up losing an ogre with Fiery Veil on Anomaly:3 thanks to a past wraith of mine having a dipsas Festering Touch. I figured that having Fiery Veil on my hitdudes and a few other allies would have been have a fun thing to thematically go with defense buffs (to imitate the "Fiery Armor" from DCSS).
At the very least, my own player character had its ability set more or less complete around Tower:10, if not before that. It would be a high Vitality with decent Agility build, neglecting everything else. My character would have defense buffs (Prepare, Protect, Guardian Boon, Blessweaver) alongside a few fiery abilities (Fire Dart into Fire Blast, Fiery Veil, Greek Fire). I also managed to pick up Might early on. I know that in the past that I have had similar runs that branch from my usual "all vitality" buffers, namely ice dart-throwing buffers. It's a familiar kind of build. Nonetheless, while it doesn't seem like the most impressive ability set, it was actually decently flexible, as the buffs can be applied to any fight and the fairly accurate fire darts are going to do some damage in most fights. Greek Fire didn't get all that much Warmth synergy beyond that being on my healers earlier on, but I figure it did a lot more than what was obvious.
My huo shu would have Tormentor, Infectious, Venomous, and Numbing added to its abilities; a truly plague-ridden rat. This kind of challenge does have such an underleveled ally sit out for most of the fights in the latter half of the game, so it's pretty much a wasted slot aside from niche situations. Nonetheless, I had fun watching it defeat a cherufe about 9 levels over it and later on an archangel 1 level below it in arranged 1v1 fights. At the very least, such a demon could carry abilities that could be copied over to something of a higher level; Turdak was the first recruit to have the extra on-hit passives before being fused into a lampad of all things, which would be fused again into a night guant (gotta have that 170% speed from Dancing). With the ghoul's Numbing Bite on top, it's a nasty combo to let onto body-NOT-immune enemies.
I managed to get a jotunn from one of my own wraiths; while it was about 8 levels below its native level, it did prove to be the powerful ally thanks to its ability set and adept modifier (it even had Petrifying Gaze). Alongside a mindbender pixie into a mindbender ibong adarna and a lifeweaver shikome recruited in Medusa's Sanctum, that trio made up my most regular party for the bulk of the latter tower's battles. I recruited Medusa and fused her into a civatateo, which didn't see as much use but was yet another source of Petrification along with the lovely Shatter. My last non-discarded Tower recruit was a kaliga-on to replace a like-leveled mulassa, just so it could have a fiery successor.
I had a ton of resources by the end. My penultimate relic upgrade would have been Enemy Lure for the fun of it before getting Fast Dismiss. I did get mothman.
Some endgame spoilers ahead:
Victory screenshot."Siign" party and score.Tower:30 was mostly cleared, save for Heracles + healer fella (Heracles was just overwhelmingly powerful compared to the other hitdude heroes) and Joan of Arc (I would rather avoid her entirely, even though I had plenty of fire and petrification).
The Apex floors went smoothly; the first floor was a bit rough until I bothered to recruit Loki, and my ibong adarna did get relic preserved thanks to the daevas. I decided to recruit Ba'al to do the latter floors on easy mode, letting him get my jotunn's adept and a dark-immunity brand on top of that (no light abilities; as good as it was, I didn't bother with upgrading nor using it at all until I recruit Ba'al). I still got the next couple links but I simply defeated Prometheus because I didn't have the right build. I gave "Ignis" the huo shu the demiurge's powers for its ascension into godhood. I didn't encounter any wraiths and I only had one mirror chime. I used Call Demon just to see how the huo shu could complete some links; asrai's was a total massacre, unicorn's had shikome support too but it was still powerful enough, ghoul's was done by taking out six onis, and buruburu was just a little bonus. Something interesting I noticed is how Glacies is favored as an opener, probably for its slowing debuff; its prioritized over super-effective attacks first, aside from Tenebris being used more often than not to smite all peasants to death.
Also, I forgot that "Ignis" is an actual ability name in the game.
IIRC at level 25 a huo shu (or any other level 1 demon that makes it that far) has an 86% EXP penalty.