Thanks for the reply. At least i know it's not the game, bec i'm about to do NG+ and i was afraid of a repeat. Yeah the easy kill option is no good.
I've been using Super Stealth a lot, and it's never caused any harm to my playthrough. Super Damage, on the other hand, should probably just be removed from the trainer.
I cannot reproduce the gold not working. However, regarding the blacksmith upgrades, they work if you DONT have the materials, but will still DEDUCT materials you do have. The best way to use this, if what you are saying is true, is to give yourself plenty of gold before using the options for blacksmith.
The easiest way i found is adding just enough xp to reach the next lvl.
if you need 100000 xp to reach the next lvl add 99800, kill something and do it again.
and if you happen to add too much xp you can add negative xp
for example you needed 100000 xp and you added 105000 you can get the trainer to add -5200 xp and that way you dont skip a lvl.