I must say that I really like the extra dungeon (Level D) -- it's chock full of puzzles and design intricacies. In case you have a difficult time finding it, I'll leave you a small hint: this dungeon makes getting the game's best weapon a lot more troublesome. I also see that you're taking some time off from the Let's Play. I don't blame you, you're probably already tired of my evil design tactics (even though you've barely skimmed the surface of the puzzles). :p