Ahh, nostalgia. I thought the auto-fire was a little strange...what'm I supposed to do with my free hand? Actually, I used it to drink. This helped the difficulty level somewhat: without the aid of intoxicants, the game was a bit too easy for my taste. Also: the display size makes for a lot of squinting, but all in all this was a solid rendition.
I got bored before I could finish the third level. The text on the menu and death screen were more compelling than the game itself, which saddens me as I adore booze, rock'n'roll and shooting things. durfat's suggestion is a good one...a wider range of weapons and enemies would help as well. Excellent music, though.
 "Zombie megablast"){kind=icon}
 "Space Gate"){kind=icon}
 "One More Magic Potion"){kind=icon}