Oh NSF, I seem to forget you exist oh so often. I know for sure my KS Level-creating days are over, unless a rushing KS renaissance takes this place by storm. But, nonetheless, I'd rather not hold out some playable quality content for the few people around to enjoy.
Dark Sea 2 was my ambitious sequel to my popular level, Dark Sea. It revolved around navigating the gigantic sub, the Archetype 1, and worming your way into the evil underwater base of Professor Subtle or whatever his name was. This was one of my most high-graphics levels, with some creative narrative/atmospheric touches thrown in that would have really made this a gem of a level if it was seen to completion. Unfortunately, my time's devoted to more valuable projects, but I won't turn a blind eye to this forum if any of those come to real fruition. It's not to say that there isn't a decent amount of content here, it probably stacks up enough to make up a shortish-mediumish level, although it lacks some polish as far as difficulty balance goes.
Download it here.