There is no magic cheat code that instantly grants 100% completion in Grand Theft Auto: Vice City. Using external tools or modified saves to unlock everything not only bypasses the intended experience but can also corrupt your save file, leaving you with nothing to show for it.
True completion comes from mastering every system the game offers. Here is a comprehensive checklist of everything you need to conquer:
Finish the main narrative from "The Party" to "Keep Your Friends Close..." This is the foundation of your progress.
Purchase every property and complete their associated mission strands. Key assets include:
Reach the required level in each of the following side activities:
The satisfaction of 100% completion comes from the journey itself. Use a physical checklist or a digital tracker to mark off each objective. Take it one category at a time, and enjoy the mastery of Vice City's chaotic charm.