This mod actually started in 2011 as shown in this message (Russian):
Vk.com
Only on March 7, 2015 they came back to work on the mod by launching a demo of the mod (the files date from 2014), after that launching the mod on March 24, 2015 as shown in that message (Russian):
Vk.com and Vk.com
After this they started working on the continuation of their mod called Unreal mod 2: Dead Land but never came to release it.
These photos show the progress of the mod:
and in 2015 the team changed its name to Nerveholle-Team and the mod and files disappeared. Until today...
Here can download all the files released for this mod:
Download Unreal Mod (2011) - Mod DB
Download Unreal Mod 2014 (Demo) - Mod DB
Download Unreal Mod: The Crow (2015) - Mod DB
I would like to thank the PiliShic in the rutracker forum by uploading the 2011 demo.