+3.5-5% Strength for 3.5s on Hit. Stacks 5 times.
Critical hit chance scales by your current heat level up to 27.5-50%. Also increases critical ranged attacks damage by 4-10%.
+2.5-4%Charge Speed on low Overheat. Stacks up to 5 times.
Weapons
Antax Mk V Combat Axe
M35 Magnacore Mk II Plasma Gun
Feats
5 - I like confirmed kill for the sustain and reliability
10 - Free grenade every 60 seconds is amazing for sustain and allows you to not pickup grenades saving them for a zealot or ogryn which help the team
15 - Gives info to entire team which I like more than other two
20 - Enemy shooters are annoying so not taking as much toughness damage while using volley fire is always nice
25 - This one is a toss up so you can either go with Frag Storm for bleed damage or One After Another for reload speed
30 - Extra Ogryn and Monster damage is nice considering the high damage the Plasma Gun can put out.