The game has a good design and creates an attractive world around the player. It is not to hard as long as all the "side quests" are completed and the progress of the character through every session is big. This kind of rewards is perfect for a casual gamer as me , that does not enjoy other "you die all the time" indie games like FTL so much. I had a very satisfying experience with Dex!
I like the game design a lot, there is a good atmosphere generated with simple but smart graphics. At some moments I thougth I was stuck, but I could figure out how to proceed without the game getting repetitive. Overall I think Limbo is an awesome and unique experience!