I suspect that the highest single target 1turn damage class will be a rogue, mortal blow essentially one shots almost everything including bosses. If you have daggers with piercing damage even more so. Despite the nerf to flesh sacrifice elves will very minutely do more damage than a human with encourage. I think the next highest is going to be a ranger with rage and snipe. It is probably the best opener in the game imo, second only to rage + piercing shot ability if multiple enemies are in line.
With that said, every class has the opportunity to become "broken." Each plays slightly different and is powerful in their own way. I was not a fan of hydromancy so I made it a point to try and solo act one and only use water spells, I can now appreciate how much control they have over the battle field. They basically wreck any melee character because you can make the entire battlefield a giant ice rink, and freeze everyone in place every turn.
