With some ridiculous effort i have altered my derivation to support different language files, and added a german translation - i dont think a latin one is needed, and im not safe enough in any of my other languages to translate for them
The .txt needs to be put into your sourcemod/translations folder.
By all means feel free to add languages to it, you should see how its done by looking at it.
EDIT:
A friend of mine, Amonchakad, did an italian translation. Its included now.
EDIT2:
Another friend, Forsaken, did a danish translation. Added to the file.
EDIT3:
Thank olj for the now appended russian translation!
I've split the translations into files and folders, like the newer SM guideline demands. But if you prefer a single file instead, delete everything but the "all langs" file and rename it plugin.perkmod.txt