I really like the idea of a strong 80's game. The demo plays nicely, sounds and graphics are both very cool.
Being strongly 80's it would be fun if you slipped in 80's references as well to the game, perhaps to the most well-known songs or TV programs at the time. It may not be possible in the main game, but on the end screen or in menus. They'd be cool little subtle easter eggs for people who get the references.