Well I do have quite a bit more ego so i have more perks available to me but I'll show you what you can get with 6 EGO perks slots. Mind you again that my EGO is almost 1200 so I have more perks slots available to me plus the Pre-order and arkfall hunter codes.
http://defiance-central.com/ego-calc...-92c-&start=72
I only maxed out the ones that I use for a pure shotty/infector build. Mostly shotty but the infector is useful against those pesky noobs that call themselves snipers. One or two burst with infector and they go running and normally die anyways with bugs and DOT killing them.
The core of this build is the extra damage from being cloaked and firing from behind for an extra 45% damage on that first shot and then just the 15% from firing from behind. If they don't die in one shot or two depending on how close you are, fire a third or melee.
I also recommend a fire nade for those who like so hide around corners and wait for you to come around.
Hope this helps you out. Looking forward to dieing to you with this build.
Edit: Oh yeah forgot to mention my shotty is a purple FRS Heavy Scattergun with Siphon nano for added damage and lifesteal, my infector is VOT Infector and my shield is a purple Rhino Contender III DX.