Ensure you have the game ISO or CSO file from your original copy.
You can install HD texture packs to significantly enhance the 3D models and UI. Key Character Unlocks Dbz Shin Budokai 2 For Ppsspp
While some fighters are available initially, others must be earned through the story mode: Future Gohan Ensure you have the game ISO or CSO
Use Vulkan for better performance on modern devices. Dbz Shin Budokai 2 For Ppsspp