umm
if you're terran..on fastest. build one barrack then mine some gas
build like 5 factories and build all vultures till you get like 30 with the mine upgrade because you can mine around the opponents way they get out....idk what you call it...but w/e..build an armory build like 30 goliaths then start building tanks
get 30 and you're practically good..this trick always works I MEAN ALWAYS im good trust me..unless you're a noob that doesnt do it well..dont forget to build turrets in front and around your base so nothing gets in..also you want to upgrade your goliaths missles the charon boosters i think thats what you call it to make sure if any guardians come at you you got the range to shoot them down..so just keep the vultures back and let the tanks and goliaths attack..its basically unstoppable...this takes about 15 minutes if you're good at doing it. WATCH OUT FOR DROPS THEY'RE SO ANOYING..