I was a little bored of hgh and bunker eng them this days i was trying some traits to get a decent melee/power build. This is that bring me best results
good def/hp (vit for conditions damage+remove with med kit and automated response), good power (pure power tool kit+burnig a lot of time+bomb every time you evade+sometimes extra hit with sigil of fire), and a lot of evade (vigor+adrenal implat).
I know this is most melee and have some problems with range build but you can pull with toolkit or get close with Rocket Boots.
I you want you can use berserker/berseker, I use soldier/berzerker coz give more survivability (we are no thief we dont have stealth) and use Drop Stimulat to get more critcs.
I just use pistol/shield coz the 2 sigils and the stun/def shield skills