It's a good puzzle game, I'll give it that. However, something about it just rubs me the wrong way. At a guess, I would point at two aspects that seem off: the gameplay, and the story. The somewhat laggy movement system, where I jump from space to isometric space, and the fact that I don't have to step on a switch to activate it all seems a bit disconcerting. As for the story, it's not bad per se, but I feel cheated, being forced to surrender everything for someone who is only missing for unexplained reasons set up by a malicious higher power. The tombstone at the beginning suggests that my love interest was dead all along, and that my denial to accept that led to the eventual conclusion, but if you wanted to take that artsy path it would have been best if you had perhaps hinted at it a bit more, rather than have it stand as a gimmick many people will dismiss at first.
With that said, I reiterate: it is a good game. It just needs some structural ironing.

Though there isn't much special about it, this is a good, solid puzzler. It took 11:30 for my love to, well, you know :P