i believe the idea behind the aliens being affected by normal guns is because the parasites are different, and evolved to take over a host body or machine, but lost the "invulnerability" to conventional weapons.
my strategy, start with one rocket launch er, max everything on it, then 2 cannon, next to launcher for nuke combo then several cannon combos for mines
this is a load of bs, we shouldnt have to pay to get acess to some of the "shiny bitz" like bigger houses, better clothes and the like, least make it so spores can be excheanged for brass, like 100 spores to 1 brass
ive cut through really long deadzones, its very hard, need lotsa speed and butloads of regens, i used about 10 core regens and 10 shell regens(parts not howmany times)
 "Interactive Buddy"){kind=icon}
 "Parasite Strike"){kind=icon}
 "Feed the King"){kind=icon}
 "Sieger"){kind=icon}
 "Master of Fortresses"){kind=icon}
 "DarkOrbit"){kind=icon}
 "Onslaught2"){kind=icon}
 "Remnants of Skystone"){kind=icon}
 "Age of War"){kind=icon}
 "Bureau of Steam Engineering"){kind=icon}
 "Starmageddon"){kind=icon}
 "Infectonator : World Dominator"){kind=icon}
 "When The Plague Came"){kind=icon}
 "Mud and Blood 2"){kind=icon}
 "ShellCore Command: Ep1 Final"){kind=icon}
 "Fly Hard"){kind=icon}
 "Elona Shooter"){kind=icon}