vitality=more HP
strength and instict=make attacks stronger (depends on the attack if strength and/or instinct make it stronger)
speed=dodging attacks and higher chance for critical hits, also reduces the chance of missing the enemy (and some bio skills get stronger with speed)
@migass
if you have bio focus on speed and use shadow blend, slash and withdrawal, for psycho use an ability which is on the right side, cant remember the name, it lowers the healing up to 90% on the highest level
 "Kongai"){kind=icon}
 "Sonny 2"){kind=icon}