Specifically, I wanted to unlock Nightwing (supposedly MVY759), but when I enter the code, it just gives buzzes, and the character is not unlocked. I tried other codes, too, like the one for Bruce Wayne's private jet, Mad Hatter's glider, Poison Ivy's henchmen... none of them worked for me.
Is there something else I need to do to make these cheats work? Are they for a different console? Or is the dude who posted them just a lying jerk?
Are any of the cheats working? I see for instance that STUDSx2 is a different code than that in Lego Batman 1. Is this one safe to use and will it work? I don't want it to mess up any achievement progress, but assume that it should be fine. Is the only way to get STUDSx2 by using this code? Do the red bricks start at STUDSx4? Thanks!