Its one of the best games on the Amiga IMHO.
Sadly, it couldve been even better. I played a demo before it was released (I have no clue where I got it from, mustve been a cover disk/CD from a German Amiga-Mag), featuring a later level where those pumpkin-headed guys are running around. The animation of them was as smooth as the player`s sprite, way better than edgy one in the final game. I guess they dropped quite a few frames for fitting it on 4 Disks or into less RAM.