I ripped the German language files from the German TimeShift DVD version and decided to publish them to everyone here who wants to play the game in German.
The version on Steam only supports English language for some reason.
And the German language pack is UNCUT! The DE version was released censored in Germany as some may know. Those language files don't alter anything about the gore level of the game!
The files are 100% UNCUT and they also include the German 1.2 Update that wasnt released on Steam for some odd reason.

There is also a standalone English 1.2 Update that works without any changes with the Steam version, because the Steam version is English anyway.
You can find the English 1.2 standalone update guide here if you are interested:
http://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=326627023

And here is the Language Pack Download.
Its over 800mb big! Just saying. Includes everything, Texts, Dubs, Videos, Patch 1.2, etc. Nothing is missing.

Download:
https://www.mediafireXcom/file/dvmdkhtwaygi2hw/tsgerunc12steam.zip/file
Replace "X" behind mediafire with a dot "."

Please tell me if the file is no longer downloadable!

Just copy the files to C:\Program Files (x86)\Steam\SteamApps\common\TimeShift.
Override files if you are asked to do so.
Without doing so it wont work. Backup the TimeShift folder if you just want to try the German language and swap back to English after it, if you dont want to redownload the whole game.

If you have any problems just tell me and I will try to help.