|Description||Nuke a rock field|
|Orb Points||100||Orb Coins||1|
Rock fields are levels that follow a boss level and contain rocks as the achievement suggests. In later levels they can contain enemy aliens as well. Rock field levels are: level 4, 8, 12, 16, and 20.
Nukes are dropped by enemy aliens after each boss level following each rock field level (however they are dropped in levels 16 and 20 because there are enemy aliens in those levels). Therefore, the earliest level this achievement can be obtained on is level 8.