Started with shaman and maxed devouring swarm, then did all the nightblade stuff, then back to shaman for end stuffs. Devouring swarm is easy mode early on. Also, because devouring swarm is so low in the tree, you get to nightblade stuff very early on…like by the time you hit 10 you can actually start putting points into nightblade I think. I rushed to pneumatic burst once I hit 10, because I wanted the run speed and the heal over time.
The other thing that isn’t reflected in that screenshot, is how much heal over time stacking you have between those two classes, you can get pretty silly health regen going. The real meat of that build is Phantasmal Blades with the vitality damage mod, coupled with devouring swarm which debuffs stuff for vitality damage. Both of those are super low in the tree skills, so you can pretty much play the build right from the start.