The style was what caught my eye originally, the pink walls and shadows have a light-hearted feel which suckered me in to this spider infested hell! I love the minimap, the use of colour to denote spaces you've 'explored' was a good touch. I also really, REALLY liked the fact that you rewarded exploration. Many games I've tried (my own included) have some form of stamina that serves to punish the player for a lack of item management or some such thing, but what it ends up doing is making exploration feel discouraged. Having the player GAIN health for moving around to new areas is really neat!
The gameplay itself wasn't particularly mind-blowing, but I felt the level design was decent and the little wiggling spiders were cool. Some good stuff here, well done :)