I'll post 2 attacks that don't actually exist (i just made them up) on the psycho, 2 attacks on the bio and 2 attacks on the hydro. Then you can continue by making more attacks for these classes.You can also make passive combat effects.
Psychological
Paranoia: Costs 7 focus. Cd 7. Attack for 25% of strength and 25/50/100/200%of instinct. You also apply "aranoid" to the target making all his attacks miss for 2/2/3/3/ turns. It also makes healings cast from the target to be 20/25/25/30% less effective. You are allowed to equip this move only 1 time in your action bar.
Schizophrenia: Costs 15 focus. Cd 10. Attack for 250/300/350/400% of strength and instinct applying "shocked" causing his personality to be corrupted and making him heal your team while damaging his team for 2/2/3/3 turns. You are allowed to equip this move only once in your action bar.
Biological:
Pierce: Costs 15 focus. Cd 12. Attack for 25% of strength and 25/50/100/200% of instinct. You also apply "iercing levels" to you making your physical piercing 50/100/200/400% more for 2/3/3/4 turns.
Forceful: Costs 10 focus. Cd 3. Attack for 200/250/300% of strength. You however apply "force extreme" to yourself stunning you for 2/2/1 turn(s) and making you unable to use moves that require focus for 4/3/3 turns.
Hydraulic
Sloppy Ice: Costs 15/10/5/0 focus. Cd 1. Attack for 25% of strength and 25/50/100/200% of instinct. You also apply "Sloppy Ice" to the target making his speed, piercing and defense to be reduced by 10/15/20/30% for 3/3/4/4 turns.
Doom desire:Costs 99% of the maximum health. Cd 99.Attack for 25% of strength and instinct. You apply the ice buff "Wailing doom" to the target making this move to be his last one. Only the bosses are immune to this effect.
Inside Poisoning:The enemy takes 15% of their own strengh and takes 100% their own stregh and 50% their own Instinct. Lasts 4 turns costs 38 focus. CD 4.
Hyper pump: Attack for 25% of strength and 25/50/100/200% of instinct. You also apply "supreme heart pump" to the target reducing his life by 200/300/400/500 for 3/3/4/4 turns.
Parasite (CD: 3) Attack the enemy for 15% of the sum of your Strength and Instnict, and reduces their Strength by 30/40/50%. Also causes the target to lost 10 Focus each turn. This effect lasts for 3 turns and cannot stack.
Pathogen (CD:3) Attack the enemy for 15% of the sum of your Strength and Instinct, and reduces damage dealt by 25/30/35/40%. Also inflicts damage-over-time equal to 50/60/70/80% of their own Instinct. This effect lasts for 3 turns and cannot stack.
Shadow focus: Costs nothing. Cd 4. Recover all focus and apply to you "shadow focus" healing you for 60/70/80/90% of your instinct every turn for 3/3/4/4 turns.
Voices(lvl.1): Inflict 200% instinct damage to their health and 75% to their focus. Can be equipped once as Voices
The Fourth Floor(Voices Upgrade): Inflict 400% Instinct to their health, 150% instinct dmg to their focus while inflicting the Fourth Floor status which stuns them for 1 turn, with a numbing effect stopping Focus abillities for 4 turns. May be equipped once as The Fourth Floor.
Hydro Power: Costs 50/40/35/30 Focus. Cd 10/8/7/5. Attack for 150/200/250/300% of your strength and instinct. You also apply "hydro pressure" to the target destroying all his focus for 2/3/4/4 turns.
Handington Disease: Costs 90 focus. CD: You can use this attack once per battle. This strange disease is transferred to the enemy psychologically.You have however to infect yourself first. You will be killed in 10 turns while you gradually receives less healing, do less damage, and in the last 2 turns of the ten you damage yourself for 1/3 and then for 2/3 of your remaining health. You are allowed to equip this ability only once. The bosses are immune to this effect. You can only infect yourself with this psychological disease.
Psycho transfer: Costs 15 focus. CD: This can be used only twice per battle. Transfer all status buffs (good and bad) to the selected enemy. Especially good co-working with the handington.
So you have to play a move like in the chess, "queen sacrifice". You infect yourself only, you can't infect any other and then use psycho transfer to transfer it to the enemy. You sacrifice yourself and one turn later, the enemy dies. Just keep your partner(s) alive for one more turn and you won! Unless of course if you have to take out more than one enemies.