According to ESRB, this game contains: Mild Violence
Parents have nothing to worry about. The game is completely blood-free, and while it consists mostly of fights, all of the enemies are either robots who explode harmlessly or humanoids who teleport to safety when injured.
Fans of the comic will want to be wary. While the game contains familiar locations and characters, it's neither a faithful nor a fun presentation of Superman, and only Superman completists should consider it.
Deaf and Hard of Hearing gamers have nothing to worry about, as the game contains full subtitling.