This is such a fun game. I’m about 12 stages in on one file and have already picked up two crown items as random drops.
Anyway, can golems and undead upgrade classes, and, if so, what are the conditions for it?
I’m pretty sure they can’t be upgraded, you have to upgrade your leaders enough so that they can get better creatures. Lichs and sorcerers can recruit undead (Even while not in town), and general characters can get just about anything anyway.
You shouldn’t be bothering with golems anyway, they seem a little useful as a purely physical guard, but the enemy always ends up blasting them with magic anyway. Besides, they don’t hit ever and take up two spaces.