Crash of the Titan

Defeat a Gargantuar, they are first encountered on level 5-8. There are two Gargantuars in this level. It is best to use an instant kill and a Jalapeno or a Doom-shroom with a Coffee Bean right after, so the Imp that it throws gets killed too. Or, you could play Co-op Wall-nut Bowling, as Gargantuars appear in this Co-op level. Winning the Co-op Wall-nut Bowling level for the first time will also earn you the ZFF's 4 Evr achievement as well. You could also play the minigame Heavy Weapon to get this achievement.

Note: If you get the Popcorn Party achievement, you also get this.

Winning Ace of Vase or playing one of the later levels of Vasebreaker Endless will also achieve this.

Trivia

 * This achievement is named after either the game, "Crash of the Titans" or the movie, "Clash of the Titans".
 * This achievement is exclusive for the XBLA and PS3 versions.
 * The lawn ornament in the Xbox live version is a buried Gargantuar with cross marks on it's eyes and a butterfly on its head.