Floor 35 onwards has been nothing but Greater Autumn Golems and Skillfully Made Gold Golems. I never thought I would see a monster distribution that would make me want to fight the wild hunt again. I expect my eventual death will be to an unlucky roll on prismatic spray from the gold golems.
Did you get the message that you have to retire your character to get more bosses to spawn? Or are you playing in the main campaign?
I didn't notice that though, I will retire it then. I am not playing the main campaign and since I am on floor 51, if I need to retire it to get another 1 to spawn, then I shall do so.
Yeah, you got the achievements already. When you reset, the shops get new (and more?) inventory, and you get to pick a boon based on how many floors you cleared. eg I could have picked: all your characters get +2 to hit, main character gets +3AC, a random belt from level 28, or something else that I don’t remember.
I don’t know what happens when you beat all four bosses, but the way I understood it was that they are 10 floors deeper each time. Whether or not a fifth boss or something opens up after that, I’m not sure.