This is copied from Serral's build vs Goblin in 2021. It hits at ~3:35 with 3 roaches, 1 ravager, and ~10 zerglings.
6 | 0:00 | | |
13 | 0:12 | | |
13 | 0:17 | | |
14 | 0:30 | | |
16 | 0:39 | | |
15 | 0:43 | | Rally this drone to take the extractor at 1:00 |
17 | 0:55 | | |
18 | 1:01 | | |
17 | 1:11 | | |
16 | 1:26 | | Inject once at main, then walk down to natural to inject |
16 | 1:27 | | |
20 | 1:33 | | |
21 | 1:41 | | |
21 | 1:54 | | |
21 | 1:57 | | |
21 | 2:05 | | |
21 | 2:35 | | Morph the front roach as soon as you reach 75 gas |
21 | 2:36 | | |
27 | 2:40 | | |
29 | 2:47 | | |
32 | 2:53 | | |
34 | 3:01 | | |
35 | 3:07 | | |
36 | 3:13 | | |
41 | 3:28 | |
The goal is to focus down the unit or building guarding the wall. Use corrosive bile to open the wall, and then on the shield battery. You'll only have 16 drones total, so if you don't break through you'll most likely be in a losing position.
This build is weak to oracle openers, especially since energy recharge allows oracles to have effectively unlimited energy to defend. Splitting lings between both bases should allow for good damage though.