I come to think Tier 3 Golem Works might not been the best idea

Be careful around Armoury if You have Tier 3 Golem Works in Your temple.
Turns out, if You have no enemies in the depot and You somehow trigger Royal Sentinel (Edit: Dude in Top Right corner) from the next segment, it will lock Your room and You may be unable to progress the chain.

I managed to kill all regular mobs on the screen here by abusing Pounce, but the golem was just stuck in "typical NPC pathing" where he just walked in a circle, unable to reach me.

Luckily for me, I lost only Commander there and it didn't lock me out of Architect's, but it could be really devastating if it happened at the beginning of someone's chain.
And yes, room was completely blocked (Red barrier, closed door). Fortunately, I was able to portal out.