Definitely a Challenging game, I'm curious, are there multiple endings? If so, how many? I wish to pursue and find them all as I travel through this bizarre world -
There is only one ending. The game is short (about 4 hours) and not very story-heavy. It may seem difficult at first, but it gets easier and easier.
(After you kill the first boss, return to the King - you can find some bullets in his room if you have zero. After that you should go right, to the second pipe. The hardest part is behind you.