Custom Steam Achievement Timestamp Tool

Posted on | November 22, 2025 | Comments Off on Custom Steam Achievement Timestamp Tool

I need a Windows-only utility that can unlock any achievement for games I already own and assign a custom date and time to the unlock — including dates many years in the past. This tool must work locally only, by editing the relevant userstats or similar Steam files stored on my PC… (Budget: $250 – $750 USD, Jobs: .NET, C# Programming, Debugging, Desktop Application, JSON, Reverse Engineering, Software Development, Visual Studio, Windows API, Windows Desktop)

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