This is a fairly standard opening that you can use to get to your first Command Center and transition into any other build that you want.
The transition here is an early Factory that you can swap your Reactor onto for double Hellion production. Alternatively, you can also get a pair of Reapers and start your 3rd CC as early as 2:30.
12 | 0:01 | SCV | |
13 | 0:13 | SCV | |
14 | 0:18 | Supply Depot | |
14 | 0:25 | SCV | |
15 | 0:40 | SCV | |
15 | 0:41 | Barracks | |
16 | 0:45 | Refinery | |
16 | 0:52 | SCV | |
17 | 1:05 | SCV | |
18 | 1:18 | SCV | |
19 | 1:29 | Barracks Reactor | |
19 | 1:31 | Orbital Command | |
19 | 1:43 | Command Center | |
19 | 1:56 | SCV, Supply Depot | |
20 | 2:07 | Marine x2 | |
20 | 2:09 | SCV | |
23 | 2:15 | Factory | |
23 | 2:21 | SCV |