You don't know how to play the game and the only thing you should be doing is playing the game and learning how. Basically, you suck so shut the fuck up and learn to play.
Not without proof either. You said to jump side to side while running at the human as dretch, then said use wallwalk mostly. The first one is only useful under situations where the human is reloading, distracted, or has their back turned, and is alone. And you have to use the floor as much as you use the walls and ceiling to be a good dretch, although I'm pretty certain that nothing could ever beat patience when it comes to dretching.
Anyways, it only takes one example to put you down in this case. The fact that you only had much to say about the dretch shows that you probably spend most of your time as dretch, because you don't know how to fucking use it.
Go away.