i almost never used my heavy weapon
You should have used it, the weapons are incredible, I managed to get to the nuke weapon, and after some time for it to charge, I used on a bunch of, ah damn I forgot the name of those blue creatures, Hoth was it? well no matter.
I was out numbered by those things, and including maybe 2 or 3 heavy hitters. So I used by Nuke gun, fired it. Next thing I know me and my team was the only ones standing lol. I also used this weapon when you fight the human reaper. One shot the health of the human reaper went very low, real quick.
The gun is called M-920 Cain and the enemies are Husks. Hoth is the ice planet from Star Wars.
Cain and the Reave ability are so powerful I feel like a dirty cheater whenever I use them.