The Witcher 2: Assassins of Kings Enhanced Edition

This achievement is technically missable, but you are given many opportunities to do this. First off, the dialogue option that is considered an intimidation is signaled by a red eyeball with a lightning ball through it. You can get this in the prologue, by slapping the guy next to the monk before you escort Foltest across the bridge with the dragon. The achievement will unlock after any successful intimidation, however.