Rick Astley? That one's old...
yeah... but it fits the theme of the update so nicely

Nice try rickrolling, but I've memorized the youtube link. It's happened so many times.
Idea: Make scrolls. Like the scroll of punishment. That would be awesome, being able to get a ball & chain from a chest.
Make the scroll labels something like TASTY OR LLELDDM like in nethack, instead of the potions. When scrolls are used, they disappear. There is no real way to test scrolls safely, since only you can read them. However, if you drop them on an altar along with a dead body, it will tell you what the scroll is.
I like the idea with scroll (all effects in the world fits on a scroll

). But should they have different sprites like the potions, or only a Name (showed when picking it up)?
Potions should be harder if not impossible to break. I accidentally whip them way too often
I will, it's way more annoying... then it should be(would making them break on a longfall be better with and without the spelunker).
""I don't know why I am here" she says" would be better than "I don't know where I am" and make it more clear that it's not spelunky thinking that(It is her saying that right?). Making her appear next to door(like flare crates) would help with noticing her before or while reading the text instead of after. Another thing is that there aren't really any other cases where someone actually speaks so you could make it somehow different from feelings but just adding she says to it might be enough.
The shopkeeper speaks!

Another color might do it.
I had some problem with walls when she was beside the entrance, but if the flare crate can do it... so should the damsel - she would turn up inside a wall, a little bloody spark
Also damsel should get more valuable as a sacrifice with love potion. Maybe each level gone through increasing it a bit or just a constant little higher value.
properly not if it's just the spelunker drinking, but when the truelove effect is in effect... it would only be fitting.
Later areas really should have more potions as I've usually discovered most effects before jungle.
When the mixing system is in place. I will make chests more rare again, and when the identification, and the potion shops...
But the idea of adding pr. world is growing on me fast. There is so many cool effects left out right now