I think the main problem is the stats RiliSoft gives you. The only way to really see the lethality is to shoot yourself with an explosive (while wearing Ruby Armor) or to ask someone to shoot you (while you are wearing ruby armor)
Whenever I ask hackers what they use, they leave. I've seen soooo many level 5 RAPS with Laser Minigun.
EDIT:
There's also rent weapons. You pay 5 gems to rent either an impulse rifle (halo plasma rifle) or a heavy machine gun...IDK how long though...
EDIT:
Lol, so did everyone else. Misleading title. But if you've been playing it for a while, it should be easy. My second account's lvl 16 after 2 weeks!
Lol
I didn't lie. You were expecting some hack or glitch :)
I explained in the guide. If you have 3 weeks of spare time---1 week in...
So...I have become very frustrated with the gem system, and so I decided to start a gem-efficient second account. Currently it is level 16 with 143 gems from leveling up and the campaign. I did the math, and by level 21 or 22, I (or you) should have enough gems to get Laser Minigun on a weekend...