Which amulet+jewel are you using? I’m tempted to test it.
I’m rank 20 engineer and I’ll share my rifle/grenade build:
30 Explosives 4/7/11
30 Firearms 6/4/9
10 Tools 6 <——- Who can play without this? :p
6x Runes of Divinity and Sigil of Bloodlust
Soldier’s Amules with Berserker’s Jewel
Skills:
Medkit
Grenade Kit
Elixir B
Slick Shoes
This is the build I enjoy the most. It offers tons of offensive power with grenade kit and heavy rifle power with Elixir B. I know I do not have a stun breaker, but slick shoes+super speed+ med kit heals is a great way to recover and Elixir B is just too good to not play with imo. The build also offers great mobility so you can roam the map and score alot of points.
Tip for all Engineers: Tool belt skill on Grenade Kit is one of the highest hitting abilities in the game if done right. Make sure you immobilize your target and hit it and only it will all the grenades. Cause if more than one opponent is around, the damage is split. With traits it throws one extra grenade, dealing even more damage.