"Getadelt wird wer schmerzen kennt" means... ???

It's german for something. What does it mean? 10 pts to the first person who tells me the right thing.

whoever knows pain becomes criticized

Chris T is right in his translation, and therefore: Congratulations, he earned ten points! ;))

As to what that particular sentence is supposed to mean... Beats me. I have no idea. I've never heard it before, and I'm German. So if anyone could tell me where they heard it, in what kind of context... That would be interesting.

ROFL,
The first translation iss correct. But think you mean a sentence from the Song "Feuer frei", which is "Geadelt wird wer Schmerzen kennt.".

And:

geadelt = to be ennobled
getadelt = being criticized

I think the phrase goes " geadelt wird wer Schmerzen kennt"., meaning someone who endured a lot of pain will be knighted (become a knight/royalty). I believe it is a phrase from the bible, meaning that there will be a reward for enduring a lot of pain/hardship.

Tantilized is he who knows pain. Is actually the correct traslation of the phrase

My feeling tells me it's actually Roman, but as hard as I tried, I could find no quote from literature, so here's just my own humble translation:
"Dispraised be those who know pain".

It reminds me of something we kids often got to hear in the 1970ies in Germany:
"Ein Indianer kennt keinen Schmerz."
("A [red] Indian knows no pain.")
Yes, my father may have been right; but I prefered to play the cowboy anyway...