No Armoury room

You just unlucky, thats how the temple runs, you going to get it eventually, plus when you hold shift on a room it tells what medallions can it drop etc,not sure if it says for rooms medallions tho

It’s just rng, temple building is hard, sometimes it happens, I did 150 crystals with no spymasters once. But keep going it’s worth it in the end

just RNG, I've not had a corruption chamber in forever at this point, been trying to get one for ~4 days now

There hasn’t been anything in patch notes about it but I’ve also had similarly bad RNG with the armory in my last 3 runs. It instead gave me multiple spy rooms. I think you have too many bait rooms and open spots next to roads. The game semi-prioritizes giving you at least 1 room that can connect to what you have. With your setup you could place any room it gives you. Cut your middle road length in half and try to only place bait rooms that could connect to either an armory, garrison, or spy.

You actually hurt yourself making your road that long and placing that garrison at the end of it. Even if it gives you an armory at this point, you can’t progress until both rooms and the piece of road at the end get destabilized or you’ll loop.

It seems like some rooms are way more uncommon than the rest. When I needed 4 thaumaturges I had to do 34 temples to get them all and it was a grind. You'll get them sooner or later but it can get pretty frustrating when you haven't placed a single room in 10 runs. Puhuarte's medallions tend to help, I tend to get rarer rooms on rerolls, but that might be confirmation bias.

Thats RNG

That is just rng. Went 12 rooms dry without one and had 4 puharte rerolls between them and no armoury the finally got one as a medal drop. Then the game gives a classic "fuck you" and I start seeing them after I dont need them. Same tends to happen with spymasters.

But yeah rng can be really dumb like medal drops. Sometimes you will get like 5 zantipi medal drops even though those last for like 10 runs