I found this game confusing and it got boring very fast, as there is almost no gameplay to it, and what there is, is very repetitive.
The story says to find the oasis, but there is no progression anywhere. Bodies seem to fall down to hell to steal your broken corpse and then it's game over, and the sound effect that plays when they do steal your corpse sounds very bad.
I left the mouse in the middle of the screen and just moved the character left and right while firing.
When I got to the far left and right sides, so I was half off the screen, I could fire but then the bullet disappeared almost straight away.
I got to stage 3, and the screen just got more and more red. Then the falling enemies were slightly different as they swayed left to right, but not nearly enough to keep things interesting, I just left them to steal my corpse at that point.
I also found the music to be irritating.