We know about this bug and are looking into a fix. The Russian fonts are missing from those games.
problem still here, i can provide testing if needed
i have gentoo 64 system
in team fortress 2 main ui looks fine, but windows like server browser have broken fonts on russian
in killing floor russian language exists in properties it also downloading some data if choosen, but ui still in english
My guess here is that for some reason the games cannot find the cyrillic fonts. I don't know specifically what Killing Floor is looking for (you'll need to contact them).
We can look into TF2, though.
I have the same problem with russian versions of TF2 & KF
TF2 is now OK for me, but not KF
Removing TF2 from the title as that part of this issue was resolved.
bug still exists

Nothing extracted yet.
Hello, I can't play on Russian. My steam interface is russian and it works fine. But i have selected russian for TF2 and Killing floor in their properties, and my games still on English.
Процессор:
Поставщик: AuthenticAMD
Тактовая частота: 2511 МГц
Кол-во логических процессоров: 4
Кол-во физических процессоров: 4
HyperThreading: Не поддерживается
FCMOV: Поддерживается
SSE2: Поддерживается
SSE3: Поддерживается
SSSE3: Поддерживается
SSE4a: Поддерживается
SSE41: Не поддерживается
SSE42: Не поддерживается
Сеть:
Скорость соединения:
Версия ОС:
Ubuntu 12.10 (64 бит)
Название ядра: Linux
Версия ядра: 3.5.0-23-generic
Поставщик X Server: The X.Org Foundation
Версия X Server: 11300000
Видеокарта:
Модель: NVIDIA Corporation GeForce 9500 GT/PCIe/SSE2
В дюймах: 20,08" x 11,30" (диагональ 23,03")
В сантиметрах: 51,0 см x 28,7 см (диагональ 58,5 см)
Осн. шина: PCI Express 16x
Осн. видеопамять: 512 MB
Поддерживаемое сглаживание: 2x 4x 8x 16x
Звуковая карта:
Аудио устройство: Analog Devices AD1988B
Память:
Оперативная память: 3009 МБ
Разное:
Язык интерфейса: Русский
LANG: ru_RU.UTF-8
Микрофон: Not set
Места на диске: 469452 Мб
Наиболее свободный диск: 61231 Мб
Установленное программное обеспечение:
Последние сообщения об ошибках:
Mon Feb 11 19:29:04 2013 GMT: file ''/tmp/dumps/assert_20130211232903_1.dmp'', upload yes: ''CrashID=bp-31d1cb92-bce7-4a7b-8bb8-099132130211''
Mon Feb 11 19:29:33 2013 GMT: file ''/tmp/dumps/assert_20130211232932_1.dmp'', upload yes: ''CrashID=bp-bbe26537-ce76-478f-9d53-ed0242130211''
Mon Feb 11 20:54:22 2013 GMT: file ''/tmp/dumps/assert_20130212005422_1.dmp'', upload no: ''Failed to open/read local data from file/application''
Mon Feb 11 20:55:05 2013 GMT: file ''/tmp/dumps/assert_20130212005501_2.dmp'', upload yes: ''CrashID=bp-26320243-9804-4f7c-9a0d-ca3c52130211''
Mon Feb 11 20:56:37 2013 GMT: file ''/tmp/dumps/assert_20130212005635_1.dmp'', upload yes: ''CrashID=bp-35264ecf-ae7c-467b-a108-3c36c2130211''
Mon Feb 11 20:56:38 2013 GMT: file ''/tmp/dumps/assert_20130212005637_2.dmp'', upload yes: ''CrashID=bp-10c9d7da-55d3-4817-8c5a-1f9b82130211''
Mon Feb 11 20:56:39 2013 GMT: file ''/tmp/dumps/assert_20130212005638_1.dmp'', upload yes: ''CrashID=bp-3681ddd7-284f-4a8e-bed0-89f5b2130211''
Mon Feb 11 20:56:40 2013 GMT: file ''/tmp/dumps/assert_20130212005639_2.dmp'', upload yes: ''CrashID=bp-e86e40e1-b710-4fff-9e74-47c082130211''
Mon Feb 11 21:08:17 2013 GMT: file ''/tmp/dumps/assert_20130212010816_1.dmp'', upload no: ''Failed to open/read local data from file/application''
Mon Feb 11 21:35:48 2013 GMT: file ''/tmp/dumps/assert_20130212013548_1.dmp'', upload no: ''Failed to open/read local data from file/application''
Mon Feb 11 21:35:50 2013 GMT: file ''/tmp/dumps/crash_20130212013550_2.dmp'', upload no: ''Failed to open/read local data from file/application''