Congratulations for this great sequel to Randoom, one of my favorite games of recent years, one of those I had most fun with. Graphics, sound and playability are all very good, and the more I play Randoom Ancient Stones the more I like it.
So far I only have a few minor complaints.
I could argue that characters every now and then get lost in the background color, a black outline would have been nice but as matter of fact, this apparent issue hasn't caused me any accidental deaths, so...
...Instead, perfectly overlapping enemies cost me a life several times. It also happened in the original Randoom, but I am pretty sure it was less frequent. Maybe you could simply alternate the Z priority between two overlapping sprites to let the player know of the danger?
Other simple quality of life improvement you may consider is defaulting the continue option to YES! There's nothing worse than accidentally selecting NO because you are eager to get back to the game and forgot not to press fire repeatedly to cut to it quickly.
Oh and there seems to be no pause button?
Cheers,
Davide