An excellent update! I'm loving the clues system and sniffing them down. I'm also VERY intrigued by the new oddities introduced with Asriel, and eager to see what they're building up to. Papyrus, meanwhile, continues to be a steadfast sweetheart... which only has me wondering when we'll see him being dangerous. Great work!
I've been rounding up issues I note through the chapters to try and help keep everything to one fell swoop of error sweeping; I'll be posting it in a follow up comment.