Volume to Sixteen is an achievement in Plants vs. Zombies 2. It requires the player to "defeat" the Hair Metal Gargantuar, but more specifically complete Neon Mixtape Tour - Day 16. It is worth 20 points on Game Center for iOS devices and 2,000 XP on Google Play Games for Android devices.
The "Sixteen" part of the name references the level the player must complete to earn the achievement, Neon Mixtape Tour - Day 16. However, this part fits in with "Volume", as in the sixteenth level of volume on a speaker. This achievement was originally going to be named "Volume Goes To 16."
- It and Barrage a Trois are so far the only achievements that tell the player to "defeat" a Gargantuar instead of "unleashing" it.
- The achievement's description incorrectly refers to the Hair Metal Gargantuar as the "Heavy Metal Gargantuar."
- It cannot be achieved by completing Neon Mixtape Tour - Day 12, despite this level also having a Hair Metal Gargantuar in it.