Notice your armor disappears when trainer is activated. Also unlimited damage also applies to monsters so it's useless.
I had the same reaction when I first used this function, but actually it's supposed to work on monsters, and on any enemy, as well as on you (Geralt). Its purpose (as far as I can tell) is to allow you to get around the world quickly, without worrying about combat. To limit your damage, you can set "Super Health" to a very high number and your damage will be almost undetectable.
Notice your armor disappears when trainer is activated. Also unlimited damage also applies to monsters so it's useless.
They explained that in the notes that came with the trainer. It is meant for people to use when Geralt falls from a high place.
Unlimited stamina is permanent.
Please find a way to reset stamina.
use the trainer custom config to set the stamina value to whatever you want
best,
Cal