The "Exit"-Sign is a little bit miss leading. I run about 4 or 5 times in it until I got that I've to move to the opposite side first (But somehow I also like that. I could figure out something by myself and because it is at the start I'd nothing to loose. But not sure if the majority likes that exploring-thing - at least I did ^^).
Unfortunately I wasn't able to play to the end. The controls are way too hard for me. I was able to collect 3 items but then I died.
But I could see that you used the collectables as kind of health system which I find pretty cool idea =)