I use the same strategy in SMNC that I use in League of Legends, which is to “farm minions” and “not die.” It works, for the most part.
It’s a good game and I’m having fun with it, but I’m still figuring it out. So far I’ve found that I’m decent with a rocket launcher but not so much with the tanking classes. It also takes a while to really get a feel for what’s going on around you. In LoL, the overhead camera lets you see everything around you, but here it’s a lot harder to keep track of your immediate surroundings, especially without a minimap. I’m just not used to it yet.
SMNC gets my recommendation. You should try it. It’s free!