Here is specific umodel build for the game (
link) - no special override is required, simply choose proper engine version (if asked, 4.13). All should be supported, including meshes, textures and animations. Some animations are working properly only in "force mesh translation" retargeting mode, which can be switched with Ctrl+R. Also, you should be able to extract supported assets via "save packages" with all data, since the game is using additional format for textures.
What was done: support for ubulk+usbulk combination for textures (umodel will read max quality mip if present, since not all textures are using them), support for additional skeletal mesh class (it's a complete copy of existing class, so actually it was 1-string fix).