for me the best class is knight instead of get 3% in agi or strength get 1% in each stat including hp that in latters level come in handy, i just focus on specialized in strength perk and upgrading equipments and i never was in a lack of hp or something
The best character is the headhunter... i killed the last bost in hard mode, only with this character... stacking constitution and viper striked heal like 30 per hit = 60 plus a lot of blocking... the best character really. flake is good too but very squishy when the bite is on cooldown because low constitution and not reason to grow that stat at all.