The anime feels way more strategic than, say, SAO, where the MC is just naturally able to somehow defeat almost anything with little resistance and little strategy in mind.
Additionally, when the LH characters find themselves in the world they are quite unaware of how it works and why they are there in the first place. This adds a feeling of mystery and discovery, I especially like the part where they found out about cooking food and used it to their advantage. I initially found the tasteless food to be quite odd and depressing. This was all pleasantly surprising and something I had not expected.
Not to mention the characters appear rather interesting, especially in comparison to SAO.