Crush That Sand Castle

 is an achievement.

Objectives

 * Complete the following achievements:
 * Sponge Mob (Versatile)
 * Sponge Mob (Hermit)
 * Sponge Mob (Duo)

Rewards

 * 10 Sponge Mob Skin

Connected Achievements
This achievement is required to obtain:
 * This But A Scratch