you should have some kind of explanation for why we leave or turn back, like some floating text that says "someones here" and then "i shouldnt go any further" or something. when i got to the far right end i thought the game had just ended abruptly, and it would help to guide the player a little more.
this looks and sounds great. the combat was glitchy and i wish there was a little more depth, but i think if you made this the first level of a longer, more complex game, you could have an impressive title