AlienBreed3d2:TKG

[bubblebobble]

On Aminet, there is at least one Level Pack called "the Xenium Core". Very athmospheric.

I also think that Alienbreed3d2 TKG is the best Amiga-FPS ever made. However, there are not really many of them. But after all, it was barely playable on my 60/50MHz, and the gameplay is not really good.
I tried it under WinUAE some time ago, and it was very fast of course, but I realized that many things are not correclty timed, they simply become incredably fast when the FramePerSecond is high, e.g. the animation when reloading the gun.

[bubblebobble]

No, Genertic Species is a simple "Raycaster" (like Breathless, Doom, Gloom, Wolfenstein etc.), and AB3D2 is a "Scanlineconverter" like QuakeI. That is why Alienbreed has real bridges and polygon enemies (e.g. the giant spider is really cool). It has far more advanced engine than other Amiga FPS.
Quality of Leveldesign, choise if textures and gamplay are something different of course, DoomII is definetly rules here.

[bubblebobble]

AB3D-2 has both, Bitmap and Polygon enemies.
The polygon enemies tend to be the Boss-Type ones, so maybe you just didn't get there ;-)