Alien Breed games for Pc complete SuXXX.
It was 1st on Amiga, and this is the best place to play this shooter.
Anyway, best one of all series is Alien Breed 2: The Horror Continues (i'm fan of this series and i spended much time with it) which isnt avaible for Pc;P
Also there was Fpp version after this 2d hits.
Alien Breed 3D - bleh, terrible;)
Alien Breed 3D II: The Killing Grounds - yeah, the best "original amiga shooter"
if someone is interested in this stuff, check here (warning! only HD versions):
http://independent-software.jareks.net/amiga/