Official release notes from GOG Database and SteamDB for version 1.2.5 detail significant improvements and bug fixes:
Improved zoom features including pitch/tilt adjustments. Safety & File Analysis Wigmund.v1.2.5.1.rar
Faster animations and increased damage for "Cleave," "Sword Dance," and "Exorcism". Quality of Life: Stash size increased from 50 to 100 slots. Ability to sell or store items via double-click. Official release notes from GOG Database and SteamDB
Reduced respawn times for high-, medium-, and low-level resources. " "Sword Dance
The file extension indicates a compressed archive often used for unofficial distribution. While the game itself is a legitimate title available on platforms like Steam , downloading versions from unofficial sources carries risks:
The "v1.2.5.1" naming might refer to a specific minor hotfix or a repack version not explicitly detailed in major developer logs.