I've just about come full circle with this game. I started playing with my sons back when it came out and cycled from being an Autocannon/tank character to running solo ops with the jump pack and anti material rifle. Now I'm starting back up and have reverted to using the Autocannon again, but I use the fire-proof, heavy armor so I can bring the Double-Edged Sickle as my primary. I use the sickle to clear out enemies closer to me than would be comfortable with the AC and then switch to the AC to devastate anything farther off. There is a one handed anti-tank pistol you can get in one of the warbonds that I'm using as a secondary, but I'm not committed to that yet. It is hilarious to launch it where the bot drop ships set everyone down.

What are you using and how are you using it these days?