Now, before I start, I say welcome to any suggestions. Ok, for people who can't beat the Baron, in Sonny (The orginal) you have to stay alive. (Or more impotantly, you keep the Paladin alive.) In Sonny 2, the same rule applies. (Note: you can use any class and kill the Baron, Psycological's Free Will is the ultimate survival tool, Biological's Disrupt is great against the Baron, and Hydraulic's Vapour Cannon heals you for each shot.)
Anyways, for sonny 2 baron just take out his focus. Vapor cannon doesn't heal you with each shot, it just regens your focus. Free will in combination with ultimatum is incredibly strong. Free Will by itself is easily dwarfed by cold hydraulic's survival tools.
If psycological all you must do is High voltage(2x) Shock Coma(1x) High Voltage(2x) Then Retrograde. Takes all their health. So I've heard. I never used it myself.
for baron brixius just keep training in d previous level....for sonny thers a bug...pick an item u wanna sell..put it in d options screen..it will add up to your stats without you needing to equip it!!