Alikalix
Chieftain
Here's extension for ingame font, which doesn't support many glyphs.
Latin
Latin Extended A
Latin Extended B
Cyrillic
Greek
Instalation: unpack files into Assets\UI\Fonts\Tw Cent MT (backup of original files recommended)
http://ulozto.net/xubrFQhn/tw-cent-mt-rar
NOTE Greek - Αν θέλετε να γράψετε κεφαλαία γράμματα με τον τόνο (Ά, Ώ, Έ...), πρέπει να γράψετε μικρά ἀ, ὠ, ἐ..., επειδή το παιχνίδι δείχνει λανθασμένα Ά, Ώ, Έ...
For glyphs Turkish İ, i; I, ı use Ȉ, ȉ and I, ɉ
It's not 100% perfect, but I think it's better than using extended font function.
Feel free to modify, as cyrillic letters are low quality for me. Maybe you'll get the font to the perfection.
Latin
Spoiler :

Latin Extended A
Spoiler :

Latin Extended B
Spoiler :

Cyrillic
Spoiler :

Greek
Spoiler :

Instalation: unpack files into Assets\UI\Fonts\Tw Cent MT (backup of original files recommended)
http://ulozto.net/xubrFQhn/tw-cent-mt-rar
NOTE Greek - Αν θέλετε να γράψετε κεφαλαία γράμματα με τον τόνο (Ά, Ώ, Έ...), πρέπει να γράψετε μικρά ἀ, ὠ, ἐ..., επειδή το παιχνίδι δείχνει λανθασμένα Ά, Ώ, Έ...
For glyphs Turkish İ, i; I, ı use Ȉ, ȉ and I, ɉ
It's not 100% perfect, but I think it's better than using extended font function.
Feel free to modify, as cyrillic letters are low quality for me. Maybe you'll get the font to the perfection.