Veteran
1-2 Extra Chained Energised Hits and 2.5-10% Impact on Energised Hits.
7.5-15% Weak Spot Damage. Weakspot Kills also ignore Enemy Hit Mass.
1-4 Burn Stack(s) on Critical Hit to a maximum of 3-12 Stack(s).
4.5-6% Close Range damage on Repeated Hit. Stacks 5 times.
I use the Accatran Mk XII Recon Lasgun for everything except large groups/hordes (Shredder Frag Grenade/ Achlys Mk VI Power Sword) and armor (Achlys Mk VI Power Sword). I have heard of builds that take Onslaught so the Lasgun can handle armor too, but I prefer to just use my melee weapon. Single Target attack pattern is Special Activation > Push Attack > Light > Heavy > Repeat. Special Activation > Block Cancel > Light spam. It's important to note that Dumdum will buff the damage dealt by Infernus burn stacks on targets within close range (12m? can't remember the exact number).