All in. You must kill supply depots and production facilities. The first 2 lings will deny the expansion and bring back the reaper, which should prevent the terran from knowing you are coming.
Put constant pressure, use the reinforcing roaches hp to tank before turning them into ravagers. Great win rate between 4500-5000 mmr.
This build is weak vs an early factory with cyclone or tanks. A good terran will repair his bunker with 5-6 scvs and try to delay you at the ramp and position his siege tank out of reach of your ravagers.
Update : see Pig's version it's way more complete and has a lot of good tactical tips. http://lotv.spawningtool.com/build/46241/
13 | 0:11 | | |
12 | 0:25 | | |
14 | 0:52 | | |
14 | 0:58 | | |
13 | 0:59 | | Cut drone production. 8 on mineral, 5 on gaz. |
14 | 1:12 | | Go around scouting reaper |
15 | 1:24 | | |
15 | 1:38 | | |
15 | 2:03 | | |
21 | 2:13 | | |
23 | 2:24 | | |
27 | 2:34 | | Only roaches from there. Rally them. Don't forget overlords. |