A complete save file (often called a "100% Save" or "All Unlock Save") is a game data file where a player has already completed the story, unlocked all character routes, and opened the gallery. By downloading and installing this file, your game will essentially "remember" that progress, allowing you to:
C:\Users\[YourUsername]\AppData\LocalLow\BoredBasmati\CorruptionTown corruption town complete game save file galle install