That was super fun!
I've had this on my backlog since 2023 but it always felt so daunting! I finally gave it a reasonable go (after getting more acquainted with paper puzzles in general via Daily Thinkies) and managed to finish it. I regret not trying it sooner, though I probably would've postponed it even further had future me told me it'd take me 8 hours over the course of 2 weeks to properly beat it haha
Fantastic stuff. Every new rule felt very fun and was communicated perfectly. There's only one level that really stumped me (E13, even after getting the solution from YouTube I'd still love to know what the intended deduction chain is meant to be), which for a 100-ish level scope is just amazing. I had a grand old time!