Can be obtained on level 24 of the ‘Garden Party’ levels. Pretty self explanatory, grab any items within the map and throw them on to any of the lava tiles a total of 25 times and the achievement will unlock. You can use the same items over and over if you wish, but you do need to ensure that you are throwing the items using
in order for your progress to track.
NOTE: This achievement appears to only track within the ‘Garden Party’ levels of the game.