Smashy

Smashy is an achievement/trophy in Dead Rising 2. It is unlocked by killing 100 zombies with the smash skill move.

Guide
To effectively use the move, you must aim the zombie you are smashing at a wall, shelf, counter, or other zombie. Simply throwing them at the floor will rarely kill them. The achievement is cumulative, so you don't have to do it all in one playthrough.