Well then I gues I was too underleveled, I beat the game on Easy at around Lv 23.
I'm doing my second playthrough now and am level 22 at about 1/4 of the way through zone 5 as a Psychological. I started as a pure electric (damage gogogogo!) and am now obsessed with Shadow damage.
My mini Psycho guide!
Shadow
1. Psychopath form (+30% instinct and recovery)
2. Epiphany (130% instinct damage every turn for 7 turns)
3. Spam Dark infusion (starting skill, damage over time that stacks)
[sometimes]
4. Dark Echoes (Causes damage, lowers enemy defence and -20% shadow protection for a turn)
5. Nightmare (massive 520% instinct attack but gives them healing, evil after Dark Echoes/with Psycho form)
Free Will is excellent even as the only healing move/under the effects of the passive Overdrive (more damage over time/hurts you every turn). Shields you for 500% of instinct and heals you for 130% for 6 turns.
Electric
1. Max Charged blood (200% lightning piercing passive)
2. Spam Shock Therapy (330% instinct attack removes enemy buffs) and hope for crits
3. Electrical storm (decent Instinct damage, but causes Focus recovery)
OR 4. Wraith form (Recovers 50 focus instantly, and beefed damage)
For recovery I generally just blast Veradux with Salvation (120% greater healing and extra defence for 15 turns). Traumatize is excellent (Stuns them and removes focus). Also max Tenacity for some great passive defence stats (+60% health and 100% physical defence!). With full I was a hell of a lot more tougher than my Biological build!