Some platforms allow you to manually mark games as "Completed" for your own personal satisfaction and collection tracking.
Earning achievements in pirated games is challenging due to the following reasons: how to get achievements in pirated games exclusive
By following these guidelines and recommendations, players can enjoy the experience of earning exclusive achievements in pirated games while also respecting the game development community. Some platforms allow you to manually mark games
If the "exclusive" game you are playing is an older console title (PlayStation, Nintendo, etc.) being emulated on PC: RetroAchievements: Create an account on RetroAchievements.org and log in via Epic Games Store
Getting achievements in pirated games can be tricky because these titles are disconnected from official servers like Steam, Epic Games Store, or GOG. However, it is entirely possible to track and "unlock" them using community-developed tools.