Each class has its own advantages. None of the classes are greater than others as a whole. However, exclusive attribute distributions and builds available to each class give the player a distinct advantage in certain areas of combat.
Biological is easy and fun!Hydraulic is good if you like to focus on healing and stat boosts. Psychological if you enjoy watching in awe as you land large damage!
Yes it is possible to hit insane amounts of damage, but you will have little to no health and it takes a few turns to set up (4, i think) During this time you can be stunned quite easily by ROald or felicity.
I love pshyco for normal play, but i think overall their the worst class, zero crowd control and no 'ultimate' set of attacks. With Bio, you have the withdrawel combo and with hydro you have 'flash freeze, mind freeze' combo and the shatter combo
Psychos, in my opinion, actually have the best crowd control abilities. Use 2x Shock Coma, and 2x Traumatize, and you'll be able to silence 2 enemies in 3 vs 3.
Terrify (to cancel overdrive), epiphany, insecurity, psycho form, dark infusion, dark echoes, implosion.
I can do at least 20k during setup and another 15k when implosion is applied. Also, w/ enough instinct, you get great healing from terrify. It's perfect for single bosses.