The gallery displays a hint if you try to play a locked cinematic. I need to redesign the whole gallery menu at some point since it's getting so crowded so I'll try to add the hints to the actual menu.
The summoning tome tries to copy any enemy on the current floor, and enchantment levels changes the floor the enemies are sampled from. If it can't find any enemies it will default to spawning haunted skulls. It's a bit clunky so I need to just make a fixed pool of monsters it can clone from instead.
I want to keep the game as a pure roguelike. But I'm thinking that outfits and alternate player characters can be meta unlocks.
Having followers is a bit too strong at the moment so consider them not giving bits to be the intentional downside for now :P