If you want a legal, safe way to play Assassin’s Creed II or similar experiences on Android, here are lawful alternatives:
Assassin's Creed II was originally released for major consoles like the PlayStation 3 and Xbox 360, it was never officially ported to the PlayStation Portable (PSP). Consequently, there is no official "Assassin's Creed II PPSSPP file" to download for Android. assassin 39s creed 2 ppsspp file download for android work