Stunning to look at! The level select screen and the "dead" screen are simply beautiful and very well polished. Gameplay-wise, I think having to memorize the levels to be able to complete them can be frustrating to some players. I think it'd be a good idea to add some sort of visual queue on the right side of the screen to indicate how many guards are coming to each lane so the player has the opportunity to plan a bit ahead. Overall, very good entry, great job!