*SPOILER WARNING*
Like said the best comments, keeping going outside will do you to reack end junk.
But if you continue and reach boss zone, you are trapped without the gun!
And the music is rare... LOL
I'm stupid! In level 8, I end near a wine (don't touch a living thing), and I try to go back and I die (Don't WALK left). I repeated this 5 times... What a men!