One of those alltime classic arcade machine games. I remember that machine... but I mostly played this game on my old C64. The game itself is not really anything groundbreaking - just your ordinary platformer... You got to destroy loads of undead and apparently an uber bad guy kidnapped the maiden you (aka that knight in shining armor you see in the screenshots) are in love with.
It's all simple - run, kill undead, collect items etc. - it's a lot of fun though and despite its age this game is controlled by a joystick (doesn't seem as if it's even possible to play with the keyboard).
A classic and if you're somewhat into this genre you shouldn't miss this game.