If you are looking for more advanced Starcraft 2 strategies
, there are many different ones to choose from. It just depends if you want to improve your defensive or attacking capabilities. Not all of these strategies are all that difficult to learn. They just take a lot of time, practice, and detail so you follow the exact parameters specified. Many casual gamers really do not even bother to learn these Starcraft 2 strategies and most do not even know they exist. This will enable you to quickly and easily dominate all but the most skilled and experienced opponents.
If you are playing Zerg versus Zerg, make sure your hydras do not have to goto battle with roaches. Get as many Mutalisks as you can along with some roaches. The roaches will be able to defeat a hydralisk army. Also make sure your micro is stronger than the enemies and create spore colonies to defend yourself.
The best build is a combination of roach and Mutalisk in Zerg versus Zerg. You really only need hydras if your air army is not correctly matching up with the opponents. You also do not need Banelings because you have roaches.
By implementing this Starcraft 2 strategy against an opponent who does not know how to properly utilize his army, you will definitely have a distinct advantage over them. Just make sure to follow the proper instructions clearly laid out in a good Starcraft 2 strategy guide. This will enable you to both defend and attack more efficiently so you can dominate your opponent.