ver 3.02 released

Fixed

· Fixed a bug that enemies in specific sections will not appear at Akihabara stage. · Fixed a bug that the sound volume does not change when pressing a button that "not apply" after sound setting on the settings screen. · Fixed a bug that the aim point disappears after closing the checkpoint menu. · Fixed a bug that xp can not be obtained when dropping and defeating enemies. · Fixed a bug that BGM will not sound. · Other minor fixes.