OK, I'm done with the Psycho. He sucks compared to the Commando. Sucks donkey balls.
The Commando has, by fairly low level:
Health regen by level 6!
Faster weapon reload & swap. This is a big deal.
Faster shield regen, lower delay.
20% more base damage as a passive skill, so you don't have to be on fire to get it!
A turret for the AI to attack instead of yourself.
More survivability - my Psycho on Normal dies (literally) 20x more often than my Commando on UVHM.
Better able to get out of FFYL - can throw grenades, move faster, swap weapons faster, etc.
The Psycho has crap abilities, which always hurt you as much as they help you.
Being on fire means you die fast.
Having no shield up means you die fast.
Having less damage and no way to deflect attention - you die fast.
Psycho is just plain stupid as a class, and I'm done with him. Got to level 26, and really hated him (I don't use that word lightly), from about level 20, when dying just became stupidly common. Was dying just taking out a single enemy.
Commando never had problems on Normal, except when I was new to the game. Past level 5, death was manageable. Psycho just sets fire to himself, barely puts a dent in the enemy, then keels over and dies.
Not a fun class.
Krieg.. you're doing it wrong
Krieg can be spit into 2 or 3 different effective styles:
1. Fire damage krieg
2. Blast damage krieg
3. Melee krieg (+ choice of going down the fire damage or blast damage routes)
What level do you have your krieg at? Ive got 3 kriegs with different specs you can try them out to see if you like em.
1. fire damage krieg:
http://www.bl2skills.com/psycho.html#55000510055100550003000051553101051
this build is used for clearing out rooms with a high damage over time rate.
Gear to use:
weapons - fire Norfleet, fire butcher, fire interfacer, enkempt harrold, grog nozzle, fire kitten, fire slow hand, fire emperer
grenade - magic missle, chain lightning, fire storm
relics - fire bone of the ancients
shield - flame of the firehawk
class mod legendary torch
2. blast damage krieg:
http://www.bl2skills.com/psycho.html#32505010550150510505055141120000000
Gear to use:
weapons - fire/blast Norfleet, butcher, interfacer, enkempt harrold, grog nozzle, fire kitten, fire slow hand, ogre, rapier, nasty seeker, carnage, nasty kerblaster, casual swordsplosion, orphan maker
grenade - magic missle, chain lightning, bonus package, meteor shower
relics - fire bone of the ancients, explosive
shield - flame of the firehawk, deadly bloom
any legendary class mod
3 melee krieg (with blast damage):
http://www.bl2skills.com/psycho.html#50405010550150500505055132050000000
melee krieg (with fire damage):
http://www.bl2skills.com/psycho.html#10000000000050520505055150551155051