My duellist prefers an autoloading revolver/revolver sniper to the laser pistol. Massive damage per single shot + adrenaline = monstrous damage per crit on high adrenaline. Precision duellist is awesome, all those massive damage numbers from crits. Precision shots means more crits, more crits with the Killer skill means massive EXP bonus, which allows me to buff my Reloading so high I can reload a 150 m/s(m) 7-shot revolver in under half a second outside of Rampage. But hey, that's how I shoot things.
It's better to build up hirelings than hire the mercs that take half your reward. Hirelings are affected by the Accountant skill, and can use other weapons besides that grenade launcher the mercs use. When your hirelings are using a bowgun, an auto-shotgun, and a gravy gun, it gets less difficult :D
Hunters are awesome both ways. As a hireling, they help thin the ranks. As your Hero, you can DPS/knockback everything with a good Impact-modded bow and Bowmaster 10.
It's randomness when it comes to mod slots. I have ever seen 5- and 6- slot weapons, but I'm content to use a 3- or 4-slot gun too. I wish you could enhance a weapon to have more modslots.
Ragnarok is a fun toy when you have a full team with nice arms. Playing as a Duellist with a 4/4 Revolver (Impact, Reloading 3, Accuracy 3, Auto-reload), with a Guardian (auto-shotty 2/2 with Ammo 3 and Anti-armor 3), a Ranger (Gravy Gun with Leech/Impact mods), and a Hunter with a Rapid Bowgun, we can curbstomp a full Ragnarok and I even come out of it with no damage taken by the castle AND full adrenaline in mid-Rampage. Fun times.
Duellist dps is awesome in the high levels. Max Adrenaline works wonders with an autoloading revolver and sniper-revolver.
I swear by max Sense and Fury for crazy EXP gains, since crits + headshots is awesome.