New deltarune player, have a few questions
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So I started playing the demo of deltarune and I think I'm near the end of chapter 2, and I'm really liking it. Side note, I did not play undertale and do not know any of its lore. But anyways, just thought I'd ask some questions before getting the full game. (I kinda just felt like interacting with the community)
1: does the full game carry progress from the demo? (Or is there a way to import saves from one game to another?)
2: what's up with the appearance changing in the dark world? Are they different in any other ways with this transition?
3: is there a point to killing enemies? Sparing them seems to be useful and killing them just tells me "you've gotten stronger" but doesn't display any proof (plus I don't seem to get more rewards from it)
4: is queen related to lancer/king in any way? It doesn't say so but she looks like she would be part of that group
5: do the different armour slots ( I and II) act any differently from each other? They have their own stat changes in the shop
6: when does berdly die oh my god
Also feel free to just add anything you think I should know, thank you
(P.S I'm marking this post as spoilers just incase the comments spoil anything)