For psycho: Shock Coma - Sacrifice - Psychopath Form - Shock Coma - Epiphany - Insecurity - Dark Infusion - Dark Infusion - Implosion Does about 25k of damage with maxed instinct while keeping your enemy stunned.
For Psycho: High Voltage -> High Voltage -> Shock Coma -> Shock Coma -> High Voltage(unless has another heal buff active) -> Retrograde. Result: loses 120% health
Also Epiphany -> Confinement -> Insecurity -> Dark Infusion -> Dark Echoes -> Implosion. Pretty tough damage over time plus healing restriction
You forgot to add Overdrive as passive. Anyway, 2 Hydraulic combos: Go all out: Wreck-> Wreck->Decimate->Decimate->Avenger Form->Wreck-> Wreck->Decimate->Decimate for AWESOME damage. Note:You need 2 wreck and 2 decimate Freezer: Flash freeze->Some attack->Mind freeze->some attack->Flash freeze->some attack ->etc for a totally helpless enemy Note: You need 2 flash freeze and 2 mind freeze