Im going to be a party pooper here and say that I wasnt particularly keen on Breathless. The graphics where ok, but there was very little color variation. It was basically grey and yellow. All this said it looked quite ok and ran fairly well, but for me the gameplay was quite sterile and that's where it let me down. I wanted to like it, as much as anything so I could show my friends who'd made the jump to PC that the amiga can do FPS games, but it was more engine than game for my tastes. Maybe not the the extent of something like FEARS, but it never made the transition to game as much as something like AB3d. Even Nemac IV, which was also only average felt more immersive.
To each his own though.