Hat's off to this well designed game, and unique responsive control scheme. I am really enjoying the difficulty in later levels, and the over all challenge of the increasingly complicated enemies. Well, I assume later level, as I'm in the room with the large moving tube blocks. From the different exits in the hollow, will the game redirect me back there to explore other paths, or are there alternate endings earned by saving some "keys" by attaining others the hard way? This is one I will gladly see through to the end, kudos!