Been playing it after read ing this thread........
Replaced the title music with the actual megablast soundtrack and the ingame music with the Amiga version of the intro.
Now it FEELS like Xenon.
The gameplay is annoying however - I can't stand the way that the very few powerups you collect blow up with contact.
And it suffers from exactly the same problem as the original - die late on in the level and you lose all your weapons, making it near impossible to carry on!
Plus you HAVE to use keys.
Actually, this title had potential as a good homage to the original if someone spent time ironing out the problems and making the play meatier.
Oh well, it's free and the graphics work is nice.