If you have a modded Vita, you can use custom saves to unlock specific LBX like the NG Achilles or Epsilon. Danball Senki W (game)/Game Hints
Open VitaShell: Connect your Vita to your PC via USB or FTP. Locate Save Directory: Navigate to ux0:user/00/savedata/ . Find the Title ID: Look for the folder PCSG00094 .
, released by Level-5 in 2012, stands as a high-water mark for the customizable robot RPG genre on the PlayStation Portable and PlayStation Vita. While the game is celebrated for its deep LBX (Little Battler Experience) customization and fast-paced combat, its technical execution also deserves recognition. One of the most critical yet overlooked technical features of the game's physical release is the save data install function, often referred to as "Data Install." This system was a vital bridge between the limitations of optical disc hardware and the demands of high-speed, asset-heavy gameplay. The Problem of UMD Load Times
Copying and playing saved data on multiple systems - Playstation.net