Yes, still using emulation, but emulation is as good and accurate a real machine these days. I doubt it needed the Fast memory even, but I use the FastMem in my configuration for decompressing the LHA files through a loader, so the user just needs to drop the LHA in their hard-drives folder and run the game from the AmigaLive "single-player" list.
Another issue which I hope you are aware so to plan to fix, is that the weapon projectile sprites disappear and reappear at random.. Enemies can see you through walls and are also able to pass through walls (not sure if its supposed to)...