Note: achievements may not pop immediately, or may not show as having popped. Look at the achievement button in the game to see.
Posting this for
Itzz Sh0wt1m3 since he doesn't have a Gear VR right now.
You're going to want to go here to his dropbox for achievement worlds:
https://www.dropbox.com/sh/qeswcgkt6pah7aa/AACrIRqqZB5OrysSM...Download "SUPERWERELD4.44.zip"
Once you've unzipped it, go to on your device and open the folder: /sdcard/games/com.mojang/minecraftWorlds
(If you are running this off your phone, leave just look for the games folder in the root directory.)
Open the unzipped folder. You'll see another folder. Move this into the minecraftWorlds folder. Yes, copy all the files when it asks.
You need to make sure you set your difficulty to Easy or higher.Make sure you have armor equipped and notch apples for health. Go to the back of the world where you'll find Shulkers. Let them keep hitting you until you go waaaaay up in the world. The achievement should pop when you are high enough.