10 depot
12 barracks
13 Refinery
15 depot(with barrack scv)
15 Orbital
15 scout
(when Refinery finishes, put 3 scvs to mine gas)
15 Reactor
(after reactor make sure only one scv is mining gas)
18 CC (if there is a natural for zerg at natural spot, build cc at natural spot)
(Start Marine Production once cc is down)
Make Bunker moment first marines are halfway to being done
Put Scv back to refinery
Moment 100 gas make factory
Also make supply depot wall one at a time (until wall finishes)
30 supply Orbital supply
One factory finishes make another reactor with barrack and sit factory on the 1st reactor
Armory
2 widow mines
When armoy finishes, start +1 attack and continue hellbat production(4)
Starport
Once reactor on barracks is finished, move starport towards reactor
Make two medivacs
halfway through medivac production, make a 3rd cc, double gas and ebay.
Produce vikings and medivacs (1 by1)
Viking to kil overlords
Make 2nd factory after viking, cc, gas, and ebay.
(maybe 3rd?)
Make 2 dropshsips(One hitting third and other hitting first) ((Maybe second if no third)
2 base play is usually 3 factories (2tech 1 reactor) (starport reactor)
If heavy aggro/scout it, make 5 factories (3 tech 1 reactor)
constant hellbat harrass (just by oresence or actual damage)