I think you have to wait far too long, having completed three quarters of the alien dimension before getting the alien gas and by that time you hardly have to fight them compared to when they are always raiding your dimension!
This might just be me and my psycho tendencies, but I always have a heavy thermic lance and lots of grenades on 1 guy and use him to take out the lobstermen(2 hits max)!
Welcome! I thought that apocalypse was better, it was just the weak s**t about the micronoids and only getting anti-alien gas after you have killed nearly 80% of the aliens that bugged me. True, UFO is brilliant, TFTD was good because it was just a port of the original underwater, Interceptor was good, but in a different way(even though the space flight felt absolutely rubbish) and I have not played anymore so I cannot comment on them :alien2:
Ah! A person after my own heart! I thought it was just me that completely blitzed all UFO's in the alien dimension on a weekly basis to prevent them raiding Mega-Primus!