The Bastard Jug, A.K.A, The Kill Robber Jug.
So, I've been trying to get one of those fancy backgrounds for your thing and my Tech challenges are nearly complete. I noticed I needed more points with the Hex Shield and the Turret. So... I created something incredible.
Spec everything into offensive stuff. Tank everything, let your teammates shoot the enemies then deploy the shield. The pulse emitted should be enough, if not, the electrocuting effect does the job.
If you don't want to be a bastard, deploy the shield FIRST and let your mates detonate the explosion or just shoot them. The Turret which I thought served for nothing but repairing shields is actually very effective. Deploy it in places you can't reach because of your mobility and against armored bosses.
P.S: The final Hex Shield evolution should be the option to make it bigger. Not for protection, but for affecting a larger area. I mean, you can put it in a doorway and everything that passes through it will get electrocuted. I haven't tried detonating with Siege Pulses, but if you can then it becomes even better.