RAR (multi-part archive). You must have all parts (e.g., part1, part2, etc.) in the same folder to extract the contents.
Multi-part archives like this require all volumes (Part 1, Part 2, etc.) to be present to function. The_Impregnation_of_the_Elves-v1.0.0.1.part2.rar
Ongoing updates for English and Traditional Chinese text. RAR (multi-part archive)
While specific patch notes for v1.0.0.1 are often hosted on the developer's private community pages, standard early updates for this title generally addressed: The_Impregnation_of_the_Elves-v1.0.0.1.part2.rar