The Forbidden Donut achievement is one of many achievements you can unlock in Destroy All Humans 2 Reprobed.
Destroy All Humans 2 Reprobed – Forbidden Donut Trophy / Achievement Guide
As with most games these days, Destroy All Humans 2 Reprobed comes with a handful of achievements that players can unlock. One such achievement is the Forbidden Donut achievement.
If you're wondering how to unlock this achievement, then you've come to the right place.
Getting the Forbidden Donut achievement is actually pretty easy. All you have to do is throw a cop through a donut with PK. To be fair, you can even unlock this achievement in Bay City which is pretty early in the game.