Disco is Undead

Difficulty: Easy-medium

Disco is Undead is an achievement that can be obtained on the iOS, Android, and Game of the Year versions of Plants vs. Zombies. It is worth five points on Game Center. It requires the player to hypnotize a lead Dancing Zombie using a Hypno-shroom; the requirements are the same as the Steam achievement Thrilling the Zombies.

Strategies
Be careful, because you might hypnotize the front Backup Dancer instead. When the wave approaches, get a Hypno-shroom ready. When it arrives, plant the mushroom directly in front of the Dancing Zombie. Hypnotizing it on the first column won't count because it won't have time to summon Backup Dancers. This achievement is the easiest to get on Level 2-8. When deploying the Hypno-shroom, it would be helpful to plant it in the same square the lead Dancing Zombie is in. This achievement is hard to get with large groups of zombies because you might accidentally hypnotize a different zombie as the Dancing Zombie is slower than most zombies.

With some luck, this can be done easily in the Third Vase level of Vasebreaker.

Trivia

 * Disco is Undead was originally named Thrilling the Zombies (previously known as Walk This Way) because the original Dancing Zombie used to look like the pop star Michael Jackson.